Sophie and Marcos are each saving for new bicycles. So far, Sophie has $7 saved and can earn $4 per hour walking dogs. Marcos has $3 saved and can earn $6 per hour at his family's plant nursery. After how many hours of work will Sophie and Marcos have saved the same amount? What will that amount be? Use the system of equations below to complete the graph.
Answer:
2 hours
Step-by-step explanation:
You can express each person's total earning as the formula for a line. (y=mx+b) Use the amount per hour that can be earned as the slope (m) and the amount already earned as the y intercept (b)
Sophie: y=4x+7
Marcos: y=6x+3
Since y is the total amount of money saved and you know that both people need to earn the same amount of money, we know that y is the same in both equations so we can use substitution to substitute one of the equations in for y in the other equation like this:
4x+7=6x+3
From here, solve algebraically
Subtract 3
4x+4=6x
Subtract 5x
4=2x
Divide by 2
x=2
So they will have the same amount of money after 2 hours.
please help me with this
Thanks~
Answer:
(-6,8)
Step-by-step explanation:
Can I have help on this?
I’m not quite sure what the answers are, I have tired this problem a variety of times and still get it wrong.
Check the picture below, keeping in mind that opposides sides and interior angles in a parallelogram are congruent.
what is the easiest way to find length in volume
Answer:
Step-by-step explanationthe easiest way to find the length in volume is by first knowing it's formular wich is L x Wx H= length x width x height
Please solve the attached problem with all steps.
Answer:
x = 8
Step-by-step explanation:
Theorem
When a secant segment and a tangent segment meet at an exterior point, the square of the measure of the tangent segment is equal to the product of the measures of the secant segment and its external secant segment.
Secant: a straight line that intersects a circle at two points
Tangent: a straight line that touches a circle at only one point
Given:
tangent segment = xsecant segment = 4 + 12 = 16external secant segment = 4⇒ x² = 16 · 4
⇒ x² = 64
⇒ x² = √(64)
⇒ x = ±8
As distance is positive, x = 8
if x and y are real numbers greater than 1, what is the value of the expression log_x 1 + log_y y?
Answers:
A) 1
B) 0
C) 2
[tex]\log_x (1)+\log_y (y)\\\\=\log_x x^0 + 1\\\\=0\cdot \log_x x +1\\\\=0+1\\\\=1[/tex]
Need help ASAP Please
Answer:94.5
Step-by-step explanation:First you have to multiply 3.5x4.5 and the multiply that by 2 which gives you 31.5. Then you multiply 9x3.5 and then you also multiply that by 2 which gives you 63 and then you add 31.5 and 63 which would give you 94.5.
Winston earns $140.00 by selling 56 hot dogs at a concession stand at school. Using the
same rate for the cost of one hot dog, how many more hot dogs would Winston need
to sell to earn a total of $175.00?
Answer:
14 hotdogs
Step-by-step explanation:
Each hotdog is $2.50. Subtract $140 from $175 giving you $25 left to earn. You then take 25 and divide by the unit rate(cost of one hotdog) and you should get 14 more hotdogs need sold to reach $175.
a student claims y=1 is not a linear equation because it does have the form y=mx+b. Do you agree or disagree explain why
The student is wrong because y = 1 represent lienar equation of a horizontal line. Disagree.
What is Linear Equation in Slope-intercept Form?Equation of a line in slope-intercept form, is y = mx + b, where m is the slope and b is the y-intercept of the linear graph.
Where m (slope) = 0, the linear equation would be, y = b, which suggest that the line is horizontal, and intersects the y-axis at point b.
Therefore, the student is wrong because y = 1 represent lienar equation of a horizontal line. Disagree.
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Don’t mind my answers I got them wrong but can you please help? I’ll award brainliest
Answer:
y=mx+b
Step-by-step explanation:
use that formula
Which number sentence is true?
A. 30.678 > 31.112
B. 81.001 > 80.999
C. 24.510 = 24.5
D. 72.49 < 72.469
Answer:
B
Step-by-step explanation:
31.112 is actually greater than 30.678 because 31 is a greater number than 30. so the statement stated is false.
24.510 is greater than 24.5 because if you add 2 zeros to 24.5, it would be 24.500(adding zeros after decimal point doesnt change the value). 24.500 is less than 24.510. the numbers are not equal.
72.49 is greater than 72.469 because if you add a zero to 72.49, it will be 72.490. 72.490 is greater than 72.469.
Basically only B is true because 81 is greater than 80.
For the inverse variation equation xy = k, what is the constant of variation, k, when x = 7 and y = 3? three-sevenths seven-thirds 10 21
The value of the constant k when the value of x and y is 7 and 3 respectively in the equation xy=k is 21.
What is an equation?An equation is formed when two equal expressions are equated together with the help of an equal sign '='.
The value of the constant k when the value of x and y is 7 and 3 respectively in the equation xy=k can be written as,
[tex]xy=k\\\\(7) \times (3 ) =k\\\\k= 21[/tex]
Hence, the value of the constant k when the value of x and y is 7 and 3 respectively in the equation xy=k is 21.
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Answer:
D
Step-by-step explanation:
K=21
56. A track coach recorded all runners' times for the 200-meter dash and
wants to summarize the results.
Select the box in each row with the term that completes the
statement. Not all terms will be used.
Mean Median
Interquartile
Range
Range
The coach can use the_to
o
summarize the runners' times.
The coach can use the to
indicate how close all runners'
times were to each other.
Considering that outliers will be disconsidered, the correct statement is:
The coach can use the Interquartile Range to summarize the runners' times.
What is the Interquartile Range(IQR) of a data-set?It is the values of a data-set that are between the 25th percentile and the 75th percentile, that is, the middle 50% of the values. It's advantage in certain situation is that it disconsiders outliers.
In this problem, the best way to summarize the times is disconsidering outliers, hence the Interquartile Range is used, as it indicates how close all runners' times were to each other.
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How many degrees is the angle measurement of x?
Answer:
x ≈ 37.13°
Step-by-step explanation:
using the sine ratio in the right triangle
sin x = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{13.4}{22.2}[/tex] , then
x = [tex]sin^{-1}[/tex] ( [tex]\frac{13.4}{22.2}[/tex] ) ≈ 37.13° ( to the nearest hundredth )
Do number 6 pleaseeee
Answer:
145%
Step-by-step explanation:
140+63 = 203
203/160 = 1.45
1.45x100 = 145%
What rule can be used to find the next term of the sequence? an = an–1 – 79 an = an–1 – 13 an = an–1 13 an = an–1 79
The rule that can be used to find the next term of the sequence 27, 40, 53, 66, 79,... is given by: Option C: a_n = a_(n-1) + 13
What is arithmetic sequence?An arithmetic sequence is sequence of integers with its adjacent terms differing with one common difference.
If the initial term of a sequence is 'a' and the common difference is of 'd', then we have the arithmetic sequence as:
[tex]a, a + d, a + 2d, ... , a + (n+1)d, ...[/tex]
Its nth term is
[tex]T_n = a + (n-1)d[/tex]
(for all positive integer values of n)
And thus, the common difference is
[tex]T_{n+1} - T_n[/tex]
for all positive integer values of n
Here, the considered sequence is 27, 40, 53, 66, 79,...
We see that:
40-27=13
53-40=13
and so on, the difference between each consequtive pair of terms of this sequence is 13.
Thus, due to having common difference in consequtive terms, this is an arithmetic sequence.
For this series, we've got:
Initial term = a = 27Common difference = d = 13Thus, its nth term is given by:
[tex]T_n = a+(n-1)d= 27 +(n-1)13 = 13n + 14[/tex]
Since the options are using the notation [tex]a_n[/tex] instead of [tex]T_n[/tex], so we will use that too. Thus, nth term and (n-1)th terms are:
[tex]a_n = 13n + 14\\a_{n-1} = 13(n-1) + 14 = 13n + 1\\[/tex]
Thus, we can write nth term in the form of (n-1)th term as:
[tex]a_n = 13n + 14 = 13n + 1 + 13 = a_{n-1} + 13\\\\a_n = a_{n-1} + 13[/tex]
Thus, the rule that can be used to find the next term of the sequence 27, 40, 53, 66, 79,... is given by: Option C: a_n = a_(n-1) + 13
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Answer:
c
Step-by-step explanation:
may you please answer this question
Answer:
Step-by-step explanation:
Vertically opposite angles are congruent.
∠A = ∠C
∠A + ∠C = 254
∠A + ∠A = 254
2∠A = 254
∠A = 254/2
∠A = 127
Linear Pair: In two adjacent angles, if the non common arms are opposite rays, then they are called linear and they add up to 180
∠A + ∠B = 180 {linear pair}
127 + ∠B = 180
∠B = 180- 127
∠B = 53°
The price of an item yesterday was 105. Today, the price rose to 147 find the percentage increase
Answer:
40%
Step-by-step explanation:
147 - 105 = 42
42/105 = .4
.4 × 100 = 40%
A store pays $50 for a pair of shoes. The markup is 25%
Answer:
Are you asking for the selling price? If yes the answer should be $50 x (1+25%) = $62.5
If ∠G measures 40°, ∠F measures 49°, and f is 7 feet, then find g using the Law of Sines. Round your answer to the nearest foot.
4 feet
5 feet
6 feet
7 feet
Answer:
6 feet
Step-by-step explanation:
took the test and got it right
Answer:
6 feet
Step-by-step explanation:
(c) 6 feet
Plis help me with the blank spaces !!!! They give me those 4 options as well in the second one
The total points earned depends on the number of correct answers.
Hope this helps!
11. If mNJ = "
170", mMK = (5x + 8), and mZMLK = (4x + 3)", find mZMLK.
,
M
o
K
Answer:
∠ MLK = 51°
Step-by-step explanation:
the secant- secant angle MLK is half the difference of the measures of the intercepted arcs , that is
∠ MLK = [tex]\frac{1}{2}[/tex] ( NJ - MK ) ← substitute values
4x + 3 = [tex]\frac{1}{2}[/tex] (170 - (5x + 8) ) ← multiply both sides by 2 to clear the fraction
8x + 6 = 170 - 5x - 8
8x + 6 = 162 - 5x ( add 5x to both sides )
13x + 6 = 162 ( subtract 6 from both sides )
13x = 156 ( divide both sides by 13 )
x = 12
Then
∠ MLK = 4x + 3 = 4(12) + 3 = 48 + 3 = 51°
What is Arrhenius's definition of an acid?
O a substance that dissociates in water to produce hydroxide ions (OH)
O a substance that dissociates.in water to produce hydrogen ions (H+).
o
any substance that can donate hydrogen ions (H+)
[tex]\large{\underline{\underline{\pmb{\frak {\color {blue}{Answer:}}}}}}[/tex]
Arrhenius theory of an acid: This theory was discovered by Sir Svante Arrhenius in 1887. According to this theory acids are hydrogen containing compounds, when dissolves in water it gives (H+) ions.
[tex]\large{\underline{\underline{\pmb{\sf{\color {red}{Question:}}}}}}[/tex]
[tex] \sf \red{What \: is \: Arrhenius's \: definition \: of \: an \: acid?}[/tex]
[tex] \implies[/tex] (B) substance that dissociates.in water to produce hydrogen ions (H+).So, option (B) is correct.
[tex] \boxed{ \frak \red{happy \: learning}}[/tex]
What is the equation of a line that crosses the x-axis at 36 and is perpendicular to the line y=-4/9+5
Answer:
Step-by-step explanation:
Given, line equation is
We have to find the line equation which is perpendicular to the given line in slope intercept form.
Now, let us find the slope of the given line.ven line is in slope intercept form,
y = mx + c where m is slope and c is intercept.
So, by comparison, slope of given line is
Now, we know that product of slopes of perpendicular lines = -1
SLope of that perpendicular line And we are also given that, perpendicular line passes x aixs at 36. Which means that intercept of x – axis is 36.
what expression is equivalent to 1.2y+4.5-3.4y-6.3
Step-by-step explanation:
The answer is -2.2y-1.8
The equivalent expression is -2.2y-1.8
What are the equivalent expressions?Expressions that are equivalent to the same thing, even when they have distinct appearances. When we enter the same value(s) for the variable, two algebraic expressions that are equivalent have the same value (s).
Given expression:
1.2y+4.5-3.4y-6.3
To find the equivalent expression:
Simplifying,
= 1.2y - 3.4y + 4.5 - 6.3
= -2.2y-1.8
The above expression is an equivalent expression.
Therefore, -2.2y-1.8 is the equivalent expression.
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The base area of a cylinder is 200.96m2
and the volume is 1205.76 in3
. what is the height of the cylinder?
Answer:
Step-by-step explanation:
Volume of cylinder = base area * height
height of the cylinder = Volume of the cylinder ÷ base area
= 1205.76 ÷ 200.96
= 6 in
According to this box plot of test scores, the top 25% of the students scored about what score?
options:
86
100
96
90
96
In this type of box plot, the two end lines are the absolute maximum and minimum values, each edge of the box is the lower and upper 25%, respectively from left to right, and the line in the box is 50%
So the answer here is the right edge of the box, or 96
Find the missing side lengths. Leave your answers as radicals in simplest form. Show your work to support your answer
Answer
x=2 and y=2√2
Step-by-step explanation:
[tex] \sin( \alpha ) = \frac{2 \sqrt{2} }{x } \\ x = \frac{2 \sqrt{2} }{ \sin(45) } \\ x = 4 \\ {x}^{2} = {y}^{2} + 2 \sqrt{2} \\ {4}^{2} = {y}^{2} + (2 \sqrt{2 \: )}^{2} \\ 16 = {y}^{2} + 8 \\ 16 - 8 = {y}^{2} \\ y = \sqrt{8} \\ y = 2 \sqrt{2} [/tex]
The ratio of red to blue marbles in the bag is 5 to 3. If there are 20 less blue marbles than red, how many blue marbles are in the bag?
Answer:
30
Step-by-step explanation:
red : blue = 5:3
since difference between 5&3 is automatically 2....then just add 0 to 3