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Lerok [7]
3 years ago
7

What is the direct variation between x and y when x=9 and y=144

Mathematics
1 answer:
Yuri [45]3 years ago
7 0
Divide y by x, in this case 144 gets divided by 9, and you have your answer
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A car is driving away from a crosswalk. The formula d = t2 + 2t expresses the car's distance from the crosswalk in feet, d, in t
alukav5142 [94]

Answer:

8 feet per second.

Step-by-step explanation:

We have been given that a car is driving away from a crosswalk. The formula d=t^2+2t expresses the car's distance from the crosswalk in feet, d, in terms of the number of seconds, t, since the car started moving.

We will use average change formula to solve our given problem.

\text{Average change}=\frac{f(b)-f(a)}{b-a}

\text{Average change}=\frac{d(5)-d(1)}{5-1}

\text{Average change}=\frac{(5)^2+2(5)-((1)^2+2(1))}{4}

\text{Average change}=\frac{25+10-(1+2)}{4}

\text{Average change}=\frac{35-3}{4}\\\\\text{Average change}=\frac{32}{4}\\\\\text{Average change}=8

Therefore, the the car's average speed over the given interval of time would be 8 feet per second.

8 0
3 years ago
M&lt;1= 4x and m&lt;2= 2x-6<br><br> 4x=2x-6<br><br> What is the value of x?
Kazeer [188]

Answer:-3

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5 0
2 years ago
The following figure shows a square-based pyramid.
MaRussiya [10]

The expression that shows the surface area of the pyramid is (2 * 2) + 4(0.5 * 2 * 3)

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more variables and numbers.

The surface area of  pyramid = sum of individual area of the surface

Surface area = (2 * 2) + 4(0.5 * 2 * 3)

The expression that shows the surface area of the pyramid is (2 * 2) + 4(0.5 * 2 * 3)

Find out more on equation at: brainly.com/question/13763238

#SPJ1

7 0
2 years ago
What is the slope of the line?
USPshnik [31]

Hey there!

the slope of the line is 3

Slope is \frac{rise}{run}, meaning that the slope is \frac{3}{1} or 3

Hope it helps and have a great day!

5 0
3 years ago
Joseph read 9 books in 15 months. What was his rate of reading in books per month?
Lana71 [14]

Answer: 0.6 books

Step-by-step explanation: Divide 9 by 15 to get 0.6 books a month.

( I think) I’ve done this before , this certain question.

5 0
3 years ago
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