I think it equals 18 tens
Answer:
3 x 60 x 30 = 5400
Step-by-step explanation:
A farmer wants to fence in a rectangular portion of land along one side of her barn. She uses the side of the barn for one side of the rectangle, and makes the other three sides from a total of 60 feet of fencing. Find the side lengths that give the maximum area she can fence in, as well as the maximum area. Show all of your work.
the answer is 62x IAM take a guess so
A nurse is teaching an older adult client about good bowel habits. Which statement by the client indicates to the nurse that additional teaching is required?
- "I should eat a fiber-rich diet with raw, leafy vegetables, unpeeled fruit, and whole grain bread."
- "I need to use laxatives regularly to prevent constipation."
- "I should exercise four times per week."
- "I need to drink 2 to 3 liters of fluids every day."
In order to ensure the client understands the information being taught, the nurse should ask follow-up questions and provide resources, such as written handouts, for the client to review.
No, drinking 2 to 3 liters of fluids every day would not be an indication that additional teaching is required for good bowel habits. Instead, an indication that more teaching is needed could be the client saying that they are constipated, or that they are not having regular bowel movements.
In order to have healthy bowel habits, an older adult should aim for 3 to 4 bowel movements per week, with the stool being soft and easy to pass. Dietary fiber, drinking plenty of fluids, regular physical activity, and timed trips to the bathroom can help.
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Model each equality or inequality situation.Then determine each solution.
1.Najid is taller than Emily and shorter than Daniel. Who is the tallest?
In the question given, The inequality will be h₂< h₁<h₃. Thus, Daniel is tallest.
What is inequality?In Mathematics, Inequality defines the relationship between two values that are not equal. When two values are not equal, we use “not equal sign (≠)”. But if there is a comparison between two values, whether it is less than or greater than, different inequalities are used. For example 5<7 , 8>4.
The following problem is to model an inequality situation.
Given that ,
Najid is taller than Emily and shorter than Daniel.
Let, height of Najid is h₁
height of Emily is h₂
and height of Daniel is h₃
By the condition h₁>h₂ and h₁< h₃
Combining both the statement we have the inequality
h₂< h₁<h₃
From this inequality we have the person having h₃ height is tallest.
Hence, Daniel is tallest.
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Pls help i will give brainiest
Answer:
1. No, the side lengths 3, 5, and 9 cannot make a triangle.
2. If you are scaling an object by ¹/₃, it makes the object smaller.
If the real object is 30 inches long, it is 10 inches once it is scaled.
3. A cube has 6 faces.
To find the volume, cube the side length: 6³ = 216 in³
Step-by-step explanation:
Question 1According to the Triangle Inequality Theorem, the sum of any two sides of a triangle is greater than the length of the third side.
As the sum of the two sides measuring 3 and 5 is 8, and 8 is not greater than 9, the side lengths 3, 5, and 9 cannot make a triangle.
Question 2Scaling an object reduces or enlarges its size. When scaling an object:
If the scale factor is greater than 1, the object becomes larger. If the scale factor is between zero and 1, the object becomes smaller.Therefore, if you are scaling an object by ¹/₃, the object becomes smaller, since ¹/₃ is between zero and 1.
To scale length, simply multiply the length by the scale factor.
Therefore, if a real object is 30 inches long, its length once it is scaled is:
[tex]\implies \sf 30 \times \dfrac{1}{3}=\dfrac{30}{3}=10\;inches[/tex]
Question 3A cube is a three-dimensional solid shape with six square faces.
The volume of a cube is the product of its width, length and height.
If the side of a cube measures 6 inches, its volume is:
[tex]\begin{aligned}\implies \sf Volume &=\sf 6 \times 6 \times 6 \\&= \sf 36 \times 6 \\&= \sf 216\;in^3\end{aligned}[/tex]
Answer:
See below, please.
Step-by-step explanation:
Ans 1.
In order to make a triangle, three line segments are needed, and the sum of the lengths of any two sides must be greater than the length of the remaining side. The side lengths 3, 5, and 9 cannot make a triangle because 3 + 5 is less than 9, which violates the triangle inequality.
Ans 2.
Scaling an object by 3 makes the object larger, as each dimension (length, width, and height) is multiplied by 3. If the real object is 30 inches long and is scaled by 3, it will be 90 inches long.
Ans 3.
A cube has 6 faces. To find the volume of a cube when one side measures 6 inches, we use the formula V = s^3, where s is the length of one side. Plugging in s=6, we get V = 6^3 = 216 cubic inches.
Class10Dmakesomecakesusingmilkchocolate,darkchocolateorwhite chocolate. Some of the cakes contain nuts and the rest do not. The ratio of the number of milk chocolate cakes to dark chocolate cakes is 10:3 The ratio of the number of white chocolate cakes to milk chocolate cakes is 1:6
Of the milk chocolate cakes, the ratio of the number of cakes containing nuts to not containing nuts is 1:8
Of the dark chocolate cakes, the ratio of the number of cakes containing nuts to not containing nuts is 3:2
Of the white chocolate cakes, the ratio of the number of cakes containing nuts to not containing nuts is 2:5
What percentage of the cakes contain nuts?
The percentage of the cakes containing nuts using the ratio of different types of cakes is equal to 4.76%.
Let M represents the number of milk chocolate cakes
Let D represents the number of dark chocolate cakes
Let W represents the number of white chocolate cakes
From the given ratios, we have,
Ratio of the number of milk chocolate cakes to dark chocolate cakes
= 10:3
⇒D = M/(10 / 3)
⇒D = 3M/10
Ratio of the number of white chocolate cakes to milk chocolate cakes
= 1:6
⇒ W = M/6
Let N be the total number of cakes containing nuts.
Then the number of cakes not containing nuts is,
For milk chocolate cakes,
Ratio of the number of cakes containing nuts to not containing nuts = 1:8
⇒ 8N for every N containing nuts.
⇒M - N= 8N
⇒M = 9N
For dark chocolate cakes,
Ratio of the number of cakes containing nuts to not containing nuts = 3:2
⇒ 2N for every 3 containing nuts.
⇒ (D - 3N) = 2N
⇒ D = 5N
For white chocolate cakes,
Ratio of the number of cakes containing nuts to not containing nuts = 2:5
⇒5N for every 2 containing nuts
⇒ (W - 2N) = 5N
⇒ W = 7N
The total number of cakes is,
M + D + W
= 9N + 5N + 7N
= 21N
Percentage of cakes containing nuts is equal to,
=N/(21N) × 100
= 100/21
= 4.76%
Therefore, percentage of the cakes containing nuts using given ratio is equal to 4.76%.
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a bag is filled with 200 silver coins and 123 gold coins. what is the theoretical probability of not pulling out a silver coin?
The theoretical probability of not picking the silver coin will be 0.38 .
Given,
200 silver coins and 123 gold coins are filled in a bag .
Now,
Total number of coins in a bag = gold + silver coins
Total number of coins in a bag = 200 + 123
Total number of coins in a bag = 323
Further ,
Probability of taking silver coin = 200/323
Probability of taking silver coin = 0.619.
probability of taking gold coin = 123/323
probability of taking gold coin = 0.38
Hence the probability of not selecting silver coin is 0.38 .
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explain what information you can obtain from the regression line or how the regression line might be useful.
The regression line is a statistical tool that can be used to analyze the relationship between two variables.
It helps identify trends in the data and can be used to make predictions about future values. It can also be used to assess the accuracy of the model and to determine the strength of the relationship between the two variables.
By examining the slope of the regression line, we can assess the direction and strength of the linear relationship between the two variables.
Additionally, the y-intercept of the regression line can provide insight into the value of the dependent variable when the independent variable is equal to zero.
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the smith family has $4$ cats and $3$ dogs. in how many ways can these $7$ pets be placed in a row of $7$ chairs such that at least $2$ cats are next to each other?
There are 4896 ways of arranging 7 pets in a row of 7 chairs such that at least 2 cats are next to each other.
Arrangement of entities can be done using permutation and combination in mathematics.
Consider the distributions where 2 cats are not next to each other as
C D C D C D C.
There are 4! ways to seat the cats, and 3! ways to seat the dogs that gets us N=4! 3! = 144
There are a total of 7!=5040 possible ways to seat both cats and dogs.
At least 2 cats seat together= All possible arrangements- None of the cat seat together.
Thus the number of seatings where at least 2 cats are adjacent is
5040-144 = 4896
So, there are 4896 arrangements can be made so that at least 2 of the cats seat together.
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Physics graduate student Laura Van Ertia has conducted a complete randomized design with a single factor, hoping to solve the mystery of the unified theory and complete her dissertation. The results of this experiment are summarized in the following ANOVA display:What is the sum of squares for the factor?
Remember, accurate interpretation of the results is essential for the success of Laura's dissertation.
The sum of squares for the factor in Laura Van Ertia's experiment can be found in the ANOVA display. ANOVA stands for Analysis of Variance, and it is a statistical method used to compare the means of two or more groups. The sum of squares is a measure of the variation within the data, and it helps to determine whether the differences between groups are statistically significant.
In the given question, you have not provided the actual ANOVA display, which is necessary to determine the sum of squares for the factor. The ANOVA table typically consists of columns for sources of variation (such as between groups and within groups), degrees of freedom, sum of squares, mean squares, F-ratio, and p-value. The sum of squares for the factor can be found in the 'sum of squares' column corresponding to the between-group variation row.
Once you have the ANOVA display, locate the sum of squares for the factor and use it in your analysis to understand the results of the experiment and its implications on the unified theory.
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five observations taken for two variables follow. xi4611316 yi5050406030 what does the scatter diagram indicate about the relationship between the two variables?
If we see the scatter plot we can conclude that the possible relation between x and y is linear and with a positive correlation since when the values of x increase the values for y increases as well.
[tex]Cov(x,y) =\frac{\sum_1^n(x_i-X')(y_i-Y')}{n-1}[/tex]
[tex]\sum_1^5(6-16)(6-10)+(11-16)(9-10)....(27-16)(12-10)=106\\\\and\\Cov(x,y)=\frac{106}{4}=26.5\\\\r=0.693[/tex]
For this part we use excel in order to create the scatterplot and we got the result on the figure attached
If we see the scatter plot we can conclude that the possible relation between x and y is linear and with a positive correlation since when the values of x increase the values of y increase as well
The correlation coefficient is a "statistical measure that calculates the strength of the relationship between the relative movements of two variables". It's denoted by r and its always between -1 and 1.
And in order to calculate the correlation coefficient we can use this
[tex]Cov(x,y) =\frac{\sum_1^n(x_i-X')(y_i-Y')}{n-1}[/tex]
:
[tex]Cov(x,y) =\frac{\sum_1^n(x_i-X')(y_i-Y')}{n-1}[/tex]
[tex]\sum_1^5(6-16)(6-10)+(11-16)(9-10)....(27-16)(12-10)=106\\\\and\\Cov(x,y)=\frac{106}{4}=26.5\\\\r=0.693[/tex]
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How to solve the equation
Answer:
꧁. ꧂
Step-by-step explanation:
꧁. ꧂꧁. ꧂
In a car manufacturing factory,
1
3
of employees work in the production section,
1
4
in the
service section and
2
5
of the remaining employees in the sales section. The rest of the
employees work in other sections. A. What fraction of the total number of employees work in production section,
service section and sales section? (2)
b. What fraction of the total number of employees work in other sections? (2)
There are 6000 employees work in production section than the sales section. C. Calculate the total number of employees work in the factory. (2)
In 2018, factory manufactured 450 000 cars. In 2019, it was increased by 15% and in 2020 decreased by 15%
d. Calculate the number of cars produced in year 2020. (2)
e. Find the percentage change of production from year 2018 to 2020
The employees work in the production, service, and sales sections is 3/4 of total number. 1/4 of the employees work in other sections. The total number of employees in the factory is 14,400. The number of cars produced in 2020 is 439,875. The production decreased by 2.25% from 2018 to 2020.
Let the total number of employees in the factory be represented by the variable x. Then, the fraction of employees in the production section is 1/3x, the fraction in the service section is 1/4x, and the fraction in the sales section is 2/5 of the remaining employees, which is (1 - 1/3 - 1/4) x = 7/60x. Therefore, the fraction of employees in the production, service, and sales sections is:
1/3x + 1/4x + 7/60x = 15/20x = 3/4x
The fraction of employees in other sections is the remaining fraction after accounting for those in the production, service, and sales sections:
1 - 3/4x = 1/4x
Let the number of employees in the sales section be represented by the variable y. Then, the number of employees in the production section is y + 6000, and the number of employees in the service section is (1/4)x. Therefore, the total number of employees in the factory is:
y + 6000 + (1/4)x + y + 7/60x + 3/4x = 1x
Simplifying this equation, we get:
5/12x + 2y = 6000
we can find their sum as:
x + y = (12/5)(6000) = 14,400
The number of cars produced in 2019 is:
450,000 x 1.15 = 517,500
The number of cars produced in 2020 is:
517,500 x 0.85 = 439,875
The percentage change in production from 2018 to 2020 is:
[(439,875 - 450,000)/450,000] x 100% = -2.25% (rounded to two decimal places)
Therefore, the production decreased by 2.25% from 2018 to 2020.
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the order is for 35 mg of zantac iv now. how many milliliters of zantac will the nurse administer to the patient?: enter only the numeral (not the unit of measurement) in your answer.
Numeric (continuous) variable: the amount of zantac in milliliters that the nurse will administer.A millilitre is a unit of capacity measurement. It is one thousandth of a litre in size. In other words, a one-liter container may hold [tex]1,000[/tex] millilitres.
What zantac will the nurse administer to the patient?A millilitre is a more manageable unit of measurement for liquid volume or capacity in the metric system. It is used to measure smaller amounts of liquid and is equal to one thousandth of a litre (1 litre = 1000 millilitres).
To calculate how many millilitres of Zantac will the nurse administer to the patient, you need to know the concentration of Zantac in the dosage form and the prescribed dose for the patient.
For example, if the patient is prescribed 150 mg of oral Zantac twice daily and has a bottle of syrup that contains 15 mg/mL of ranitidine, then the nurse will administer [tex]10 mL (150 mg / 15 mg/mL)[/tex] of syrup per dose.
Therefore, If the patient is prescribed 50 mg of intravenous Zantac every 8 hours and has a vial of solution that contains 25 mg/mL of ranitidine, then the nurse will administer 2 mL (50 mg / 25 mg/mL) of solution per dose.
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Help me find the Lateral Area and the Surface Area
Answer:
Step-by-step explanation:
The lateral area consists of 2 trapezia and 2 rectangles.
= 2 * 1/2 * 4 *(4 + 6) + 2 * 9 * length of the sloping line
= 40 + 18 * length of the sloping line.
Find the length of the sloping lines:
Consider the right triangle whose height is 4 ft.
The trapezium is isosceles so the base of this triangle
= (6 - 4)/ 2 = 1 ft.
By Pythagoras:
Sloping line = √(1^2 + 4^2) = √17
So lateral area
= 40 + 18√17.
= 114.22 ft^2 to nearest hundredth
Total area =
40 + 18√17 + 4*9 + 6*9
= 130 + 18√17
= 204.22 ft^2 to nearest hundredth
Good start.
Surface area:
Area of 2 trapezoids: 2 ((4+6)/2*4) = 40
Area of two side rectangles: [tex]2*9*\sqrt{17}=18\sqrt{17}[/tex] (I got root 17 from constructing a right triangle from the altitude just like last time and then finding the missing side using pythag)
Area of top rectangle: 4*9 = 36
Area of bottom rectangle: 6*9 = 54
Summing these up we get [tex]130+18\sqrt{17}[/tex]
Lateral area is the area excluding the bases (correct me if i'm wrong) so it will be [tex]130+18\sqrt{17}-40=90+18\sqrt{17}[/tex] (we need to subtract the areas of the trapezoids).
Find the slope of a line perpendicular to the line whose equation is 5x + 6y = −18.
Answer: m = 6/5
Step-by-step explanation:
Answer: m=6/5
Step-by-step explanation:
Find the value of x in a triangle, 142 degrees and 112 degrees
The value of x in the triangle can be found by using the fact that the sum of all angles in a triangle is 180 degrees. Simplifying the equation 142 degrees + 112 degrees + x = 180 degrees, we get x = 26 degrees.
To find the value of x in the triangle, we use the fact that the sum of all angles in a triangle is 180 degrees.
Let's call the third angle of the triangle "x".
Then, we have:
142 degrees + 112 degrees + x = 180 degrees
Simplifying this equation, we get:
x = 180 degrees - 142 degrees - 112 degrees
x = 26 degrees
Therefore, the value of x in the triangle is 26 degrees.
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x=6y-7 (show work)
4x+y= -3
Answer:
(- 1, 1 )
Step-by-step explanation:
x = 6y - 7 → (1)
4x + y = - 3 → (2)
substitute x = 6y - 7 into (2)
4(6y - 7) + y = - 3 ← distribute parenthesis and simplify left side
24y - 28 + y = - 3
25y - 28 = - 3 ( add 28 to both sides )
25y = 25 ( divide both sides by 25 )
y = 1
substitute y = 1 into (1)
x = 6(1) - 7 = 6 - 7 = - 1
solution is (- 1, 1 )
Answer:
(-1,1)
Step-by-step explanation:
4(6y-7)+y=-3
24y+y=-3+28 (put them in like terms)
25y/25=25/25 (divide both side by 25)
y=1
x=6×1-7(already we get y and replace it by 1)
x=-1
(-1,1)
The basketball team can have at most 5 players on the court at any time. Which inequality best describes the number of players on the court?
The inequality representing the number of players on the court is given by 0 ≤ x ≤ 5.
Let us consider variable 'x' represents the number of players in the basketball team.
As we know,
Number of players is always greater than or equal to zero.
As number of players in the basketball team cannot be negative players.
As per condition,
Number of players in the basketball team = At most 5 players.
This implies,
Number of players in the basketball team is less than or equal to 5
The inequality that best describes the number of players on the basketball court is written as,
⇒ 0 ≤ number of players ≤ 5
⇒ 0 ≤ x ≤ 5
Therefore, the inequality used to represents the number of players in the basketball court is equal to 0 ≤ x ≤ 5.
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Simplify the following: 2(√12 + 2√3)
Answer:
[tex]2 \sqrt{2(6 + \sqrt{3} )} [/tex]
Step-by-step explanation:
There's your answer.
What is the area of this figure? Do not include a label. Number only.
Therefore, the area of the polygon is 24 square units.
What is coordinate?In mathematics, a coordinate is a set of numbers or values that represent the position or location of a point or an object in space. Typically, coordinates are used to describe points in two-dimensional (2D) or three-dimensional (3D) space.
In 2D space, coordinates are usually represented as pairs of numbers (x, y), where the first number (x) represents the horizontal distance of the point from the origin, and the second number (y) represents the vertical distance of the point from the origin.
by the question.
To find the area of the polygon defined by the given coordinates, we can use the Shoelace Formula:
[tex]Area = 1/2 * |(x1y2 + x2y3 + ... + xny1) - (y1x2 + y2x3 + ... + ynx1)|[/tex]
where?[tex](x_{1} ,y_1), (x_2,y_2), ..., (x_n,y_n)[/tex] are the coordinates of the vertices listed in order.
Plugging in the given coordinates in order, we get:
[tex]Area = 1/2 * |(-12 + -5(-3) + (-5)(-5) + (-2)(-2) + 22 + 4(-2)) - (4*(-5) + (-5)(-5) + (-3)(-2) + (-2)2 + 2(-1) + 2*(-5))|= 1/2 * |-2 - 125 + 25 - 4 + 8 + 8 + 20 + 10 + 2 + 10|= 1/2 * |-48|=24[/tex]
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Todd is training for a marathon. The following histogram summarizes the number of kilometers that he ran each day.
The probability that Todd runs more than 15kms tomorrow is 38.46%.
Define probability?By simply dividing the favorable number of possibilities by the entire number of possible outcomes, the probability of an occurrence can be determined using the probability formula.
Because the favorable number of outcomes can never exceed the entire number of outcomes, the chance of an event occurring might range from 0 to 1.
Moreover, the proportion of positive outcomes cannot be negative.
Here in the question,
Probability = No.of days with more than 15kms run/total no.of days.
= 5/2+3+3+5
= 5/13
= 0.3846
= 38.46%
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The complete question is:
Todd is training for a marathon. The following histogram summarizes the number of kilometers that he ran each day.
a cylindrical tank with radius m is being filled with water at a rate of . how fast is the height of the water increasing?
The height of the water is increasing at the rate of 3 meters per minute.
We know that a cylindrical tank with radius r and height h has a volume of V = πr²h.
The rate at which the water is being filled in the tank is given as dV/dt = 2πr²( dh/dt).
On rearranging the above equation we get dh/dt = (dV/dt) ÷ (2πr²)
Given: Radius of the cylindrical tank, r = 3 m
Rate at which the water is being filled,
dV/dt = 54π cubic meters per minute.
we
Height of the cylindrical tank, h = ?
We need to find out how fast is the height of the water increasing.
This can be calculated using the formula.
dh/dt = (dV/dt) ÷ (2πr²)
Substitute the values of dV/dt and r in the above formula,
we get,
dh/dt = (54π) ÷ (2π x 3²)
dh/dt = 54/18
dh/dt = 3 m/min
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Rewrite each equation without absolute value for the given conditions.
(Please help)ASAP
1. y = |x − 3| + |x +2| − |x − 5| if x >5
2. y = |x − 3| + |x +2| − |x − 5| if x < −2
3. y = |x − 3| + |x +2| − |x − 5| if 3
The equations without absolute value for the given conditions are: 1. y = -3x + 6 if x > 5; 2. y = -x - 6 if x < -2; 3. y = x - 6 if 3 ≤ x ≤ 5, and y = -x - 6 if x < 3.
1. When x > 5, the expression (x - 3) is positive, (x + 2) is positive, and (x - 5) is positive. Thus, to get absolute value we can rewrite the equation as:
y = (x - 3) + (x + 2) - (x - 5)
Simplifying this, we get:
y = 2x - 4
2. When x < -2, the expression (x - 3) is negative, (x + 2) is negative, and (x - 5) is negative. Thus, we can rewrite the equation as:
y = -(x - 3) - (x + 2) + (x - 5)
Simplifying this, we get:
y = -2x + 6
3. When -2 ≤ x ≤ 3, the expression (x - 3) is negative, (x + 2) is positive, and (x - 5) is negative. Thus, we can rewrite the equation as:
y = -(x - 3) + (x + 2) - (x - 5)
Simplifying this, we get:
y = 10 - x
When x > 3, the expression (x - 3) is negative, (x + 2) is positive, and (x - 5) is positive. Thus, we can rewrite the equation as:
y = -(x - 3) + (x + 2) + (x - 5)
Simplifying this, we get:
y = -2x + 6
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Find the value of x.
The value of the angle subtended by the chord WV is: x° = 79°.
How to find the angle subtended by the chord?The equal angles equal Chords Theorem states that If the angles subtended by the chords of a circle are equal in measure, then it means that the length of the chords is equal.
Now, we are given that the 2 chords are equal and we are given one angle extended by one chord as 79°. Therefore, we can easily say that by using the equal angles equal Chords theorem, that angle x° is equal to 79°.
Thus, we can say that is the value of the angle x°.
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5 Ahmid used the total number of people who bought a
hot dog and the total number of people who did not
buy a hot dog to make the relative frequency table
below. Does it provide evidence that there is an
association between buying a hot dog and buying a
drink at a baseball game? Explain why or why not.
Drink
No Drink
Total
Hot Dog
70.2%
29.8%
100%
No Hot Dog
38.5%
61.5%
100%
The frequency table shows that there is a relationship between buying a hot dog and buying a drink at a baseball game. The huge 70.2% is evidence of this.
What does the table show?The frequency table is meant to show the relationship between variables. Of all the values provided, the relationship with the highest percentage is 70.2%.
This shows that the number of people who purchased a hot dog while also purchasing a drink constituted the highest number. None of the figures come close to this one. So, there is a strong relationship between the variables.
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a quiz consists of three true or false questions. what is the probability that there are exactly two true answers?
The probability of getting exactly two true answers in a quiz that consists of three true or false questions is 3/8 or 0.375. Here's how to get the answer:
There are three possible scenarios where you can get exactly two true answers: T T F, T F T, F T T
To calculate the probability of each scenario, you need to know the probability of getting a true answer (T) or a false answer (F). Since each question is independent, the probability of getting a true or false answer is 0.5.
Scenario 1: T T F,The probability of getting two true answers and one false answer is: P(T T F) = 0.5 x 0.5 x 0.5 = 0.125
Scenario 2: T F T,The probability of getting one true answer and two false answers is:P(T F T) = 0.5 x 0.5 x 0.5 = 0.125
Scenario 3: F T T,The probability of getting one false answer and two true answers is:P(F T T) = 0.5 x 0.5 x 0.5 = 0.125
To get the probability of getting exactly two true answers, you need to add the probabilities of the three scenarios:P(2 True Answers) = P(T T F) + P(T F T) + P(F T T) = 0.125 + 0.125 + 0.125 = 0.375.Therefore, the probability of getting exactly two true answers in a quiz that consists of three true or false questions is 3/8 or 0.375.
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In response to the student question about registering multiple accounts on AliExpress for discounts, it is not recommended to create more than one account to apply coupons or discounts. This is because it goes against the platform's terms of service and may result in penalties, such as account suspension or termination.
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g suppose that you are an elementary school teacher and you are evaluating the reading levels of your students. you find an individual that reads 46.2 word per minute. you do some research and determine that the reading rates for their grade level are normally distributed with a mean of 85 words per minute and a standard deviation of 22 words per minute. a. at what percentile is the child's reading level (round final answer to one decimal place).
This shows that they read less frequently than 95.7% of their classmates in the same grade level.
what is percentile ?In statistics, a percentile is a metric that is used to express where one observation stands in relation to a larger group of data. It displays the proportion of data points that fall under a given value. For instance, if a student achieves a score in the 90th percentile on a standardised test, it signifies that they outperformed 90% of their peers who also took the test. As an alternative, if a child is taller than 25% of children their age and shorter than 75%, their height is in the 25th percentile for their age.
given
We must first compute the z-score using the following formula to determine the percentile of the child's reading proficiency.
z = (x - μ) / σ
where x represents the child's reading rate, represents the grade-level mean reading rate, and represents the standard deviation.
Inputting the values provided yields:
z = (46.2 - 85) / 22
z = -1.727
We can calculate or use a conventional normal distribution table to obtain the value of 0.0428 for the region to the left of z = -1.727. The child's reading rate is at the 4.28th percentile according to this statistic.
As a result, the child's reading proficiency is 4.3 percentile (rounded to one decimal place).
This shows that they read less frequently than 95.7% of their classmates in the same grade level.
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an urn contains green balls and blue balls. a second urn contains green balls and blue balls. a single ball is drawn at random from each urn. the probability that both balls are of the same color is . find .
The second urn contains 16 green balls and 46 blue balls.
Let's first find the probability of drawing two green balls, which we'll denote as P(G,G).
We can break it down into two cases:
Case 1: A green ball is drawn from the first urn and a green ball is drawn from the second urn.
The probability of drawing a green ball from the first urn is 4/10, and the probability of drawing a green ball from the second urn is 16/(16+N). Therefore, the probability of this case is (4/10) x (16/(16+N)).
Case 2: A blue ball is drawn from the first urn and a blue ball is drawn from the second urn.
The probability of drawing a blue ball from the first urn is 6/10, and the probability of drawing a blue ball from the second urn is N/(16+N). Therefore, the probability of this case is
(6/10) x (N/(16+N))
The probability of drawing two balls of the same color is the sum of the probabilities of these two cases, which we know to be 0.58:
P(G,G) + P(B,B) = 0.58
We can solve for P(G,G) as follows:
P(G,G) = 0.58 - P(B,B)
= 0.58 - (6/10) x (N/(16+N))
Now, we can set P(G,G) equal to the probability of drawing two green balls from the urns that we found earlier:
(4/10) x (16/(16+N)) = 0.58 - (6/10) x (N/(16+N))
By simplifying this equation, we get:
64 = 58(16+N) - 60N
By solving for N, we get:
N = 46
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Question:
An urn contains 4 green balls and 6 blue balls. A second urn contains 16
green and N blue balls. A single ball is drawn at random from each urn. The probability that both balls are of the same colour is 0.58. Find N.
A grocery store manager took inventory of all the fruit to decide what needed to be donated. Of the 8 pieces of fruit deemed "overripe," 5 were apples.
If the manager randomly selected 4 of the overripe pieces for the first donation package, what is the probability that all of them are apples?
Write your answer as a decimal rounded to four decimal places.
Answer:
The probability of selecting an apple from the overripe fruit is 5/8. Since there are no replacement, the probability of selecting another apple from the remaining overripe fruit is 4/7, and the probability of selecting another apple after that is 3/6, and the probability of selecting another apple after that is 2/5. Therefore, the probability of selecting all apples is:
(5/8) × (4/7) × (3/6) × (2/5) = 0.0429
Rounded to four decimal places, the probability is 0.0429.