Answer:
In a right triangle, one angle is always 90 degrees (a right angle). The other two angles are acute angles, which means they are less than 90 degrees.
Let's call the acute angle we're interested in "a". We know that sin a = 3/5.
"Sin" is short for "sine", which is a ratio of two sides of the triangle. Specifically, it's the ratio of the length of the side opposite angle a to the length of the hypotenuse (the longest side of the triangle, which is always opposite the right angle).
So, in our triangle, if sin a = 3/5, that means the side opposite angle a is 3 units long and the hypotenuse is 5 units long.
Now, we can use the Pythagorean theorem to find the length of the third side of the triangle (the one adjacent to angle a). The Pythagorean theorem says that in a right triangle, the sum of the squares of the two shorter sides is equal to the square of the hypotenuse. In other words:
a^2 + b^2 = c^2
where a and b are the lengths of the two shorter sides, and c is the length of the hypotenuse.
In our triangle, we know that b is the side adjacent to angle a, so we're trying to find its length. We also know that a = 3 and c = 5, so we can plug those values into the Pythagorean theorem and solve for b:
3^2 + b^2 = 5^2
9 + b^2 = 25
b^2 = 16
b = 4
So the length of the side adjacent to angle a is 4.
Now, we can use the ratios of the trigonometric functions (sine, cosine, and tangent) to find the values of cosine and tangent for angle a.
Cosine (cos) is the ratio of the length of the adjacent side to the length of the hypotenuse. So in our triangle:
cos a = adjacent/hypotenuse = 4/5
Tangent (tan) is the ratio of the length of the opposite side to the length of the adjacent side. So in our triangle:
tan a = opposite/adjacent = 3/4
Therefore, if sin a = 3/5 in a right triangle, where a is an acute angle, then cos a = 4/5 and tan a = 3/4.
An applicant must score at least 80 points on a particular psychology test to be eligible for the Peace Corps. From nearly 30 years of experience, it is known 0.6% of the applicants meet this requirement. Let the random variable x be the number of applicants who meet this requirement out of a (randomly selected) group of 300 applicants.
a. Find the mean of x.
b. Find the standard deviation of x.
c. What is the probability that 3 or more applicants meet the requirement?
d. Using the Empirical Rule, within what limits would you expect most (say, 95%) of the measurements to be?
In other words, we can expect that 95% of the time, the number of applicants who meet the 80-point requirement for the Peace Corps in a randomly selected group of 300 will fall within a range of 67 and 93.
Based on the information provided, it is likely that 0.6% of applicants will meet the 80-point requirement for the Peace Corps. Using the Empirical Rule, we can estimate that 95% of measurements will fall within two standard deviations of the mean. For the random variable x, which is the number of applicants out of 300 who meet the 80-point requirement, this would be approximately[tex]80 +/- 2(6.47),[/tex] or between 67.06 and 92.94.
for such more questions on standard deviations
https://brainly.com/question/24298037
#SPJ11
the procedure of comparing different instrumental variables estimates of the same parameter is an example of testing . (a) overidentifying restrictions (b) endogeneity (c) heteroskedasticity (d) heteroskedasticity
The procedure of comparing different instrumental variables estimates of the same parameter is an example of testing over identifying restrictions
Testing the over identifying restrictions is the procedure of comparing different instrumental variables estimates of the same parameter. It is a method used to assess the validity of a set of instruments in a two-stage least squares (2SLS) regression model. In this method, the same parameter is estimated in two different ways using different sets of instruments. The difference between these two estimates is then tested to see if they are statistically different. If they are statistically different, then this indicates that the instruments are not valid and need to be revised.
The over identifying restrictions test is typically used in cases where there is a large number of instruments and the researcher wants to be sure that the instruments are appropriate for the regression model.
This test is also useful for assessing homogeneity, which is when the independent variable is correlated with the error term in the regression model. Heteroscedasticity is another potential issue in regression models, where the variance of the error term is not constant across all observations. The over identifying restrictions test can be used to detect this issue as well.
In summary, the procedure of comparing different instrumental variables estimates of the same parameter is an example of testing over identifying restrictions. It is a method used to assess the validity of a set of instruments in a 2SLS regression model, and can also be used to detect issues such as homogeneity and heteroscedasticity.
See more about regression model at: https://brainly.com/question/28178214
#SPJ11
Enlarge shape A by scale factor 1. 5 with centre of enlargement (0, 0)
To enlarge Shape A by a scale factor of 1.5 with the center of enlargement (0, 0), we have to multiply every length by 1.5.
Enlargement of Shape A
Enlargement of a shape is when it is either stretched or shrunk in one or both directions. The original shape is called the pre-image, while the new shape is called the image. What is the centre of enlargement?
The center of an enlargement is the point about which all of the points of the pre-image are scaled to obtain the image. When the scale factor is greater than 1, the image of the pre-image is an enlargement. When the scale factor is between 0 and 1, the image of the pre-image is a reduction.In an enlargement, each point on the pre-image is mapped onto a corresponding point on the image along a straight line which goes through the centre of enlargement.
The new shape has a larger size than the original shape. To expand shape A by a scale factor of 1.5, you need to multiply each length by 1.5. You have to create new points. It's easy to use a scale ruler to make sure each length is multiplied by 1.5.
A Centre of enlargement is a point in the coordinate plane that enlarges or shrinks a figure by some scale factor. In the problem, the center of enlargement is (0, 0).
Thus, we have to extend every length of Shape A by 1.5, and our scale factor is 1.5. We get Shape B by doing so. Now, we can conclude that to enlarge Shape A by a scale factor of 1.5 with the center of enlargement (0, 0), we have to multiply every length by 1.5.
For more questions on Enlargement
https://brainly.com/question/16838059
#SPJ11
Determine the area and perimeter of the figure below. Note that each square is 1 unit in length.
Answer:
area = 127[tex]units^{2}[/tex]
perimeter = 46 units
Step-by-step explanation:
count them
Mrs Ndlovu invests 5 200 into a savings account which offers an interest rate of 5,5% per annum compounded annually.How much will Mrs Ndlovu have in her account at the end of 9 years
After a time period of 9 years Mr. Lucas' investment will be 17940 x 10^5
What does investment mean in everyday language?
A purchase made with the intention of earning money or gaining notoriety is referred to as an investment. The acquisition of things that are not used right away but will be utilized to create wealth down the road is known as an investment in an economic perspective. There are numerous investment options available.
Rate in percentage (R) = 5.5%
Principal Amount (P) = 5 200
Total time period (t) = 9 years
Number of times interest is compounded per t (n) = 1
r = R/100
r = 5.5/100
r = 0.055 rate per year,
Then solve the equation for A
A = P(1 + r/n)^(nt)
A = 5200(1 + 0.055/1)⁽¹⁾⁽⁹⁾
A = 5200(1 + 0.055)⁹
A = 5200(1.055)⁹
A = 5200 * 3.45 x 10^5
= 17940 x 10^5
Hence, after a time period of 9 years Mr. Lucas' investment will be 17940 x 10^5
Learn more about investment
brainly.com/question/15353704
#SPJ1
kim rolls a dice and flips a coin calculate the probability that he gets a 2 and a head
The probability of Kim getting a 2 and a head is 1/12.
What is probability?A subfield of mathematics known as probability studies random occurrences and the possibility that they will occur. It is a technique of putting a number on the degree of ambiguity surrounding a situation or result. A number between 0 and 1, where 0 denotes an improbable event and 1 denotes a certain event, is used to express probability. The probability of an occurrence is determined by dividing the number of possible outcomes by the number of ways the event may occur. Several disciplines, including science, engineering, economics, and statistics, employ probability.
For a fair dice, the probability of getting a 2 on the dice is 1/6.
The probability of getting a head on the coin is 1/2.
Thus,
P(getting a 2 and a head) = P(getting a 2) × P(getting a head)
= (1/6) × (1/2)
= 1/12
Hence, the probability of Kim getting a 2 and a head is 1/12.
Learn more about probability here:
https://brainly.com/question/31120123
#SPJ1
ming Math th grade > Assessment Language arts Analytics S.11 Solve two-step equations: word problems D2Y Science 18c+ 4 = 42 4c+18 42 Painted Pots lets customers choose and paint their own pottery. The store has teap multiple sizes. Rebecca chose to paint the largest teapot offered, which cost $18. She a painted 4 small teacups to go with her teapot. Rebecca spent a total of $42 on pottery. Which equation can you use to find c, the cost of each teacup? Learn with an example ✓ OF Watch a video > Social studies 4(c + 18) 42 = Recommendations 18(c + 4) = 42
The equation representing the cost of each teacup is given as follows:
4c + 18 = 42.
Hence the cost is of: $6.
How to define a linear function?The slope-intercept representation of a linear function is given by the equation presented as follows:
y = mx + b
The coefficients of the function and their meaning are described as follows:
m is the slope of the function, representing the rate of change.b is the y-intercept of the function, which is the initial value.The meaning of the slope and of the intercept for this problem are given as follows:
Slope -> cost per teacup.Intercept: fixed cost.Hence the function is given as follows:
C = xc + 18.
(as the cost of the pot is of $18).
4 teacups push the price up to $42, hence the equation is given as follows:
4c + 18 = 42
4c = 24
c = 6.
More can be learned about linear functions at https://brainly.com/question/24808124
#SPJ1
This graph shows a proportional relationship.
What is the constant of proportionality?
Enter your answer in the box.
need help ASAP before 12 am, giving 20 points!!
The constant of proportionality is equal to 12.
What is a proportional relationship?In Mathematics, a proportional relationship is a type of relationship that produces equivalent ratios and it can be modeled or represented by the following mathematical expression:
y = kx
Where:
y represent the earnings.x represent the time.k is the constant of proportionality.In order to have a proportional relationship and equivalent ratios, the variables representing the earnings and time must have the same constant of proportionality:
Constant of proportionality, k = y/x
Constant of proportionality, k = 36/3 = 60/5 = 72/6 = 84/7
Constant of proportionality, k = 12.
Therefore, the required equation is given by:
y = kx
y = 12x
Read more on proportional relationship here: brainly.com/question/28350476
#SPJ1
latrell's pool table is 3 feet wide and 7 feet long. latrell wants to replace the felt on the pool table. the felt costs $5.00 per square foot. how much would it cost in total to replace the felt on the pool table?
Latrell would need to pay 105 to replace the felt on his pool table.
Latrell has a pool table that is 3 feet wide and 7 feet long.
The pool table's felt needs to be replaced, and the cost of the felt per square foot is $5.00.
Let's find out how much it would cost Latrell to replace the pool table's felt.
What is the surface area of the pool table.
To determine the surface area of the pool table,
we need to multiply the length by the width, as shown below:
Surface area = length × width
Surface area = 7 ft × 3 ft
Surface area = 21 square feet
Now that we know the surface area of the pool table, we can determine the cost of the felt.
Latrell will need 21 square feet of felt, and it costs $5.00 per square foot.
We can use the following formula to determine the total cost of the felt:
Total cost of felt = cost per square foot × surface area.
Total cost of felt = $5.00 × 21 square feet.
Total cost of felt = $105
For similar question on surface area of rectangle
https://brainly.com/question/30337697
#SPJ11
in general, the first step in conducting exploratory research is to group of answer choices assemble a focus group. perform an experience survey. conduct a literature search. perform an analysis of selected cases. narrow a group of hypotheses to one specific hypothesis for investigation.
The first step in conducting exploratory research is to conduct a literature search. (Option 3)
Exploratory research is a type of research design used when the researcher has little or no knowledge about the research problem. The purpose of exploratory research is to gain a better understanding of the problem, identify potential research questions, and develop a hypothesis or research design.
The first step in exploratory research is to conduct a literature search, which involves reviewing existing research and publications related to the research problem. This helps the researcher to identify key concepts and theories related to the problem, as well as to identify any gaps or limitations in the existing research.
Learn more about Exploratory research:
https://brainly.com/question/13128875
#SPJ4
Complete Question:
in general, the first step in conducting exploratory research is to___.
group of answer choices
assemble a focus group. perform an experience survey. conduct a literature search. perform an analysis of selected cases. narrow a group of hypotheses to one specific hypothesis for investigation.the measures of two acute angles of a right triangle differ by 22 degrees. find the measure of each angle.
Answer:
In a right triangle, one of the angles measures 90 degrees, and the other two angles are acute angles that add up to 90 degrees. Let's call the measures of the two acute angles x and y.
We know that x and y differ by 22 degrees. So we can set up an equation:
x - y = 22
We also know that x + y = 90, since the two acute angles add up to 90 degrees.
Now we can solve this system of equations for x and y. One way to do this is to add the two equations together, which eliminates y:
x - y + x + y = 22 + 90
2x = 112
x = 56
Now we can substitute x = 56 into one of the equations to find y:
x + y = 90
56 + y = 90
y = 34
Therefore, the measures of the two acute angles of the right triangle are 56 degrees and 34 degrees.
quinn is 7 years older than banu. in 3 years the sum of their ages will be 75. how old is quinn now?
Quinn is currently 38 years old.
Let's start by using variables to represent their ages.
Let Q be Quinn's current age and B be Banu's current age.
We know that Quinn is 7 years older than Banu, so we can write:
Q = B + 7
In 3 years, their ages will increase by 3, so we can write:
(Q + 3) + (B + 3) = 75
Now we can substitute Q = B + 7 into the second equation:
(B + 7 + 3) + (B + 3) = 75
Simplifying the left side:
2B + 13 = 75
Subtracting 13 from both sides:
2B = 62
Dividing both sides by 2:
B = 31
So Banu is currently 31 years old. Using Q = B + 7, we can find Quinn's age:
Q = 31 + 7 = 38
Therefore, Quinn is currently 38 years old.
Learn more about Sum
brainly.com/question/13013054
#SPJ11
781 decreased by 30%
Answer:
546.7
Step-by-step explanation:
Down below are the coordinates after dilation but it says its wrong
Answer:
For the original triangle:
A is at (-3, 6), B is at (1, 2), C is at (-5, 1).
For the new triangle:
A' will be at (-3 - 3, -(6 + 2)) = (-6, -8)
B' will be at (1 - 3, -(2 + 2)) = (-2, -4)
C' will be at (-5 - 3, -(1 + 2)) = (-8, -3)
Fill in the table using this function rule.
y = -2x+3
X. Y
-4. ?
-2. ?
0. ?
2. ?
Answer: (-4,11)(-2,7)(0,3)(2,-1)
Step-by-step explanation:
Put the function into desmos and create a table.
Triangle TUV has coordinates T(0, 3) , U(−3, 0) , and V(−4, 4) . The triangle is reflected across the y-axis.Write the coordinate notation for a reflection across the y-axis.
Answer:
t(0,3) reflected on your axis is t(-0,3)
Find the value of x.
xº
108°
32°
3. a committee of 4 is to be selected from a group of 12 people. how many possible committees can be selected?
According to combinations formula there are 495 possible committees that can be selected from a group of 12 people.
To calculate this, you can use the formula for combinations
nCr = n!/(r!(n-r)!)
where n is the total number of people (12) and r is the number of people on the committee.
Therefore, the possible number of committees that can be selected is;
= {12!}/{4!8!}
= 12*11*10*9/4*3*2*1
= 11880/24
= 495
Therefore, 495 possible committees can be selected from a group of 12 people if a committee of 4 is to be selected.
Know more about combinations here:
https://brainly.com/question/28065038
#SPJ11
Last night, the two dinner specials at Adam's favorite restaurant were salmon filet and steak. The restaurant served 35 specials in all, 35 of which were the salmon filet. What percentage of the specials were salmon filets?
Write your answer using a percent sign (%).
Answer:
100%
Step-by-step explanation:
If 35 specials were served and 35 of them were salmon, then salmon was 100% of the special served.
the volume of the right cone below is 392\piπ units^3 3 . Find the value of xx.
The value of x is approximately 8.15.
To find the value of x, we need to use the formula for the volume of a cone, which is V = (1/3)πr^2h, where r is the
radius of the base and h is the height of the cone. We know that the volume of the cone below is 392π, so we can set
up the equation:
[tex]392π = (1/3)πx^2h[/tex]
Simplifying, we can divide both sides by π and multiply by 3 to get:
[tex]1176 = x^2h[/tex]
Using the Pythagorean theorem, we can relate the height, radius, and slant height of the cone:
[tex]h^2 + r^2 = x^2[/tex]
Since the cone is a right cone, we know that the radius is half of the diameter, which is equal to x/2. Substituting this in,
we get:
[tex]h^2 + (x/2)^2 = x^2[/tex]
Simplifying:
[tex]h^2 = x^2 - (x/2)^2
h^2 = 3x^2/4[/tex]
Now we can substitute this expression for [tex]h^2[/tex] into our equation for the volume:
[tex]1176 = x^2(3x^2/4)[/tex]
Simplifying again:
[tex]1176 = 3x^4/4[/tex]
[tex]1568 = 3x^4[/tex]
[tex]x^4 = 1568/3[/tex]
Taking the fourth root of both sides:
[tex]x = (1568/3)^(1/4)[/tex]
x ≈ 8.15
for such more question on volume
https://brainly.com/question/6204273
#SPJ11
Answer: 14
Step-by-step explanation:
Find the height of a triangle whose area is 24cm squared and has a base of 3cm
Answer:
4cm
Step-by-step explanation:
Area of a triangle=[tex]\frac{1}{2}[/tex]×b×h
[tex]\frac{1}{2}[/tex]×3cm×h=[tex]24cm^{2}[/tex]
L.C.M=2
6cmh=[tex]24cm^{2}[/tex]
h=[tex]24cm^{2}[/tex]÷6cm
h=4cm
Answer:
Step-by-step explanation:
area = [tex]\frac{1}{2} base[/tex]×height
24 = [tex]\frac{1}{2}[/tex](3)×height
24 = 1.5×height
[tex]\frac{24}{1.5}[/tex] = [tex]\frac{1,5}{1,5}[/tex]height
16 = height
If a, b, and c are different positive integers and a2+b3+c4=55, Then what is the greatest value for a*b*c=?
Answer:
Step-by-step explanation:
Given a^2 + b^3 + c^4 = 55, we need to find the greatest value for a * b * c.
To solve this problem, we can use the AM-GM inequality, which states that the arithmetic mean of a set of non-negative numbers is always greater than or equal to their geometric mean.
Using this inequality, we have:
(a^2 + b^3 + c^4) / 3 >= (a*b*c)^(2/3)
55/3 >= (a*b*c)^(2/3)
(55/3)^(3/2) >= a*b*c
The maximum value of a, b, and c occurs when they are as close together as possible. We can use the fact that a, b, and c are distinct positive integers to determine that the closest they can be is 1, 2, and 3.
So the greatest value for a * b * c is (1*2*3) = 6, and we have:
(55/3)^(3/2) >= 6
Approximately: 23.1 >= 6
Therefore, the greatest value for a * b * c is 6.
The greatest value for abc is 3,240.
What is the greatest value for abc?We want to find the greatest value of the product abc, given that a, b, and c are different positive integers and a + b + c = 55.
To maximize the value of abc, we want to maximize each individual factor, a, b, and c. We can do this by setting a to be as small as possible and c to be as large as possible, while ensuring that a, b, and c are still different positive integers.
Since a, b, and c are different positive integers, the smallest value for a is 1.
To maximize c, we set b = a + 1 and c = 55 - a - b.
Substituting b and c in terms of a, we get:
c = 55 - a - (a + 1) = 54 - 2a
Now we can express the product abc in terms of a:
abc = a x b x c = a (a + 1)(54 - 2a)
Expanding this expression, we get:
abc = -2a³ + 53a²+ 54a
To find the maximum value of abc, we can take the derivative of this expression with respect to a and set it equal to zero:
d(abc)/da = -6a² + 106a + 54 = 0
Solving for a, we get:
a = 8.93 (rounded to two decimal places)
Since a must be a positive integer, we round up to a = 9.
Using this value of a, we can find the corresponding values of b and c:
b = a + 1 = 10
c = 55 - a - b = 55 - 9 - 10 = 36
Therefore, the greatest value of abc is:
abc = 9 x 10 x 36 = 3,240
Learn more about positive integers here: https://brainly.com/question/16952898
#SPJ1
The complete question is below:
If a, b, and c are different positive integers and a₂+ b₃ + c₄ = 55, Then what is the greatest value for abc= ?
a manufacturer of chocolate chips would like to know whether its bag filling machine works correctly at the 404.0 404.0 gram setting. it is believed that the machine is underfilling the bags. a 41 41 bag sample had a mean of 396.0 396.0 grams. a level of significance of 0.05 0.05 will be used. determine the decision rule. assume the standard deviation is known to be 25.0 25.0 . enter the decision rule.
The decision rule is as follows: If Z < -1.96, reject the null hypothesis. If not, fail to reject the null hypothesis.
The decision rule in statistics is a statement that instructs on the null hypothesis’s rejection or acceptance. It is a predetermined criterion used to test a hypothesis. When the calculated test statistic falls outside the critical region, the null hypothesis is rejected. A chocolate chip producer wants to know if the 404.0 gramme setting on their bag-filling machine is correct.
It is suspected that the machine is underfilling the bags. The chocolate chip manufacturer uses a 41 bag sample with an average weight of 396.0 grams to determine whether the machine works correctly at 404.0 gram setting.
With a significance level of 0.05, the decision rule is as follows:
If Z < -1.96, reject the null hypothesis. If not, fail to reject the null hypothesis.
Z can be calculated as follows:
z = (x - μ) / (σ / √n)
where:
x = sample mean = 396.0
μ = population mean = 404.0
σ = standard deviation = 25.0
n = sample size = 41
Substitute the values in the equation:
z = (396.0 - 404.0) / (25.0 / √41)z = -2.67Z < -1.96
Thus, reject the null hypothesis that the machine is filling bags correctly at 404.0 gram setting.
You can learn more about standard deviation at
https://brainly.com/question/475676
#SPJ11
Here are a few pairs of positive numbers whose sum is 50.
a. Find the product of each pair of numbers.
b. Find a pair of numbers that have a sum of 50
and will produce the largest possible product.
First
Number
1
2
10
Second
Number
49
48
40
c. Explain how you determined which pair of numbers have the largest
product.
tor ic
Product
Answer:
a. The product of each pair of numbers is:
1 x 49 = 49
2 x 48 = 96
10 x 40 = 400
b. The pair of numbers that will produce the largest possible product is when the two numbers are equal to half of the sum, which is 25. So the pair of numbers is 25 and 25, and the product is 25 x 25 = 625.
c. We can determine the pair of numbers that have the largest product by using the following reasoning: For any two numbers whose sum is fixed, their product is maximized when the two numbers are as close together as possible. This is because the product of two numbers that are far apart is always smaller than the product of two numbers that are closer together and have the same sum. In this case, the sum is 50, so the two numbers that are closest together and add up to 50 are 25 and 25, which give the largest possible product.
what did one dog say to the other dog
Answer: I like "Hot Dogs"?
Step-by-step explanation:
10. The state fair is a popular field trip destination. This year the senior class at High School A and the senior class at High School B both planned trips there. The senior class at High School A rented and filled 8 vans and 8 buses with 240 students. High School B rented and filled 4 vans and 1 bus with 54 students. Every van had the same number of students in it as did the buses. Find the number of students in each van and in each bus.
The senior classes at High School A and High School B planned separate trips to New York City. The senior class at High School A rented and filled 1 van and 6 buses with 372 students. High School B rented and filled 4 vans and 12 buses with 780 students. Each van and each bus carried the same number of students. How many students can a van carry? How many students can a bus carry?
Brenda's school is selling tickets to a spring musical. On the first day of ticket sales the school sold 3 senior citizen tickets and 9 child tickets for a total of $75. The school took in $67 on the second day by selling 8 senior citizen tickets and 5 child tickets. What is the price each of one senior citizen ticket and one child ticket?
Matt and Ming are selling fruit for a school fundraiser. Customers can buy small boxes of oranges and large boxes of oranges. Matt sold 3 small boxes of oranges and 14 large boxes of oranges for a total of $203. Ming sold 11 small boxes of oranges and 11 large boxes of oranges for a total of $220. Find the cost each of one small box of oranges and one large box of oranges.
A boat traveled 336 miles downstream and back. The trip downstream took 12 hours. The trip back took 14 hours. What is the speed of the boat in still water? What is the speed of the current?
Flying to Kampala with a tail wind a plane averaged 158 km/h. On the return trip the plane only averaged 112 km/h while flying back into the same wind. Find the speed of the wind and the speed of the plane in still air.
The school that Stefan goes to is selling tickets to a choral performance. On the first day of ticket sales the school sold 3 senior citizen tickets and I child ticket for a total of $38. The school took in $52 on the second day by selling 3 senior citizen tickets and 2 child tickets. Find the price of a senior citizen ticket and the price of a child ticket.
The sum of the digits of a certain two-digit number is 7. Reversing its digits increases the number by 9.
What is the number?
A boat traveled 210 miles downstream and back. The trip downstream took 10 hours. The trip back took 70 hours. What is the speed of the boat in still water? What is the speed of the current?
Let's assume that each van and each bus can carry "x" number of students.
What is the equations based information?Let's assume there are "x" students in each van and each bus. Therefore, the total number of students in High School A's senior class is 8x + 8x = 16x. We know that the total number of students in High School A's senior class is 240, so we can set up an equation:
16x = 240
Solving for x, we get:
x = 15
So, each van and each bus had 15 students in it for High School A's senior class.
Similarly, for High School B, the total number of students is 4x + 1x = 5x. We know that the total number of students in High School B's senior class is 54, so we can set up an equation:
5x = 54
Solving for x, we get:
x = 10.8
Since the number of students must be a whole number, we can round up to 11. Therefore, each van and each bus had 11 students in it for High School B's senior class.
Therefore, the total number of students in High School A's senior class is 1x + 6x = 7x. We know that the total number of students in High School A's senior class is 372, so we can set up an equation:
7x = 372
Solving for x, we get:
x = 53
Therefore, each van and each bus can carry 53 students for High School A's senior class.
Similarly, for High School B, the total number of students is 4x + 12x = 16x. We know that the total number of students in High School B's senior class is 780, so we can set up an equation:
16x = 780
Solving for x, we get:
x = 48.75
Since the number of students must be a whole number, we can round up to 49. Therefore, each van and each bus can carry 49 students for High School B's senior class.
Let's assume that the price of one senior citizen ticket is "s" and the price of one child ticket is "c". Therefore, we can set up two equations based on the given information:
[tex]3s + 9c = 75[/tex]
[tex]8s + 5c = 67[/tex]
We can solve these equations simultaneously to find the values of "s" and "c". One way to do this is to multiply the first equation by 8 and the second equation by 3, so that we can eliminate "c" and solve for "s":
[tex]24s + 72c = 600[/tex]
[tex]24s + 15c = 201[/tex]
Subtracting the second equation from the first, we get:
57c = 399
Solving for "c", we get:
c = 7
Substituting this value into one of the original equations, we can solve for "s":
[tex]3s + 9(7) = 75[/tex]
[tex]3s + 63 = 75[/tex]
[tex]3s = 12[/tex]
[tex]s = 4[/tex]
Therefore, one senior citizen ticket costs $4 and one child ticket costs $7.
Let's assume that the speed of the boat in still water is "b" and the speed of the current is "c".
Therefore, we can set up two equations based on the given information:
[tex]336 = (b + c) * 12[/tex]
[tex]336 = (b - c) * 14[/tex]
Learn more about equations here:
https://brainly.com/question/29657983
#SPJ1
PLEASE HELPPP
Answer:
Step-by-step explanation:
You didnt attatch anything
If Julie drives from york to Corby via Dorby how many miles will she have driven?
The answer to this question is 289 miles. The sum of 89 + 73 + 127 is 289, so Julie will have driven a total of 289 miles.
What is sum?Sum is the total of two or more numbers added together. It is a mathematical operation used to find the aggregate of two or more numbers or amounts. Sum is calculated by adding the numbers together to get the total.
This is because Julie will be driving a total of 89 miles from York to Derby, then 73 miles from Derby to Corby, for a total of 162 miles. She will then have to drive 127 miles from Derby back to York, giving a total of 289 miles.
Once these distances are determined, the total number of miles is simply the sum of the three distances. The sum of 89 + 73 + 127 is 289, so Julie will have driven a total of 289 miles.
To further illustrate this answer, it can be thought of as a triangle, where each location is a vertex and the lines connecting them are the distances between the locations.
For more questions related to distances
https://brainly.com/question/17273444
#SPJ1
the australian sheep dog is a breed renowned for its intelligence and work ethic. it is estimated that 45% of adult australian sheep dogs weigh 65 pounds or more. a sample of 12 adult dogs is studied. what is the mean number of dogs who weigh 65 lb or more?
5.4 out of the 12 adult Australian sheep dogs in the sample weigh 65 pounds or more, on average.
We can start by calculating the likelihood that a single adult Australian sheep dog weighs 65 pounds or more using the provided estimate of 45%. If p represents the percentage of adult dogs weighing 65 pounds or more, the following is the result:
p = 0.45
Next, we may calculate the median number of dogs weighing 65 pounds or more using the sample size of 12. If X represents the proportion of dogs in the sample that weigh 65 pounds or more, X will follow a binomial distribution with n = 12 and p = 0.45 as its parameters.
The formula for X's mean or expected value is:
E(X) = np
When we change the values of n and p, we obtain:
E(X) = 12(0.45) = 5.4
Learn more about sample here:
https://brainly.com/question/15659544
#SPJ4
Find the mean, median, mode, and range of the following list.
35, 16, 28, 4, 62, 15, 48, 22, 16, 28
Mean
Median
Mode
Range
To find the mean, we add up all the numbers in the list and divide by the total number of numbers:Mean = (35 + 16 + 28 + 4 + 62 + 15 + 48 + 22 + 16 + 28) / 10 = 27.4To find the median, we first need to put the numbers in order:4, 15, 16, 16, 22, 28, 28, 35, 48, 62The median is the middle number. In this case, there are 10 numbers, so the middle two are 22 and 28. The median is the average of these two numbers:Median = (22 + 28) / 2 = 25To find the mode, we look for the number that appears most often. In this case, both 16 and 28 appear twice, while all the other numbers appear only once. So the mode is 16 and 28.Mode = 16, 28To find the range, we subtract the smallest number from the largest number:Range = 62 - 4 = 58Therefore, the mean is 27.4, the median is 25, the mode is 16 and 28, and the range is 58.
Answer: the mean is 25.4, the median is 25, the mode is 16 and 28, and the range is 58.
Step-by-step explanation:
To find the mean, we add up all the values and divide by the total number of values:
Mean = (35 + 16 + 28 + 4 + 62 + 15 + 48 + 22 + 16 + 28) / 10
Mean = 254 / 10
Mean = 25.4
So the mean is 25.4.
To find the median, we need to first put the list in numerical order:
4, 15, 16, 16, 22, 28, 28, 35, 48, 62
The median is the middle number in the list, so in this case it is 25, which is between the 5th and 6th numbers in the list.
So the median is 25.
To find the mode, we need to find the number that appears most frequently in the list. In this case, the numbers 16 and 28 each appear twice, which is more than any other number, so both 16 and 28 are modes of the list.
So the mode is 16 and 28.
To find the range, we subtract the smallest value from the largest value:
Range = 62 - 4
Range = 58
So the range is 58.
Therefore, the mean is 25.4, the median is 25, the mode is 16 and 28, and the range is 58.