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olya-2409 [2.1K]

2 years ago

12

Tanna scored 130 points on her first game of bowling. On her second game of bowling she scored 156 points. Calculate her percent

change in points scored.

1 answer:

Marina CMI [18]2 years ago

5 0

Answer:

the answer is a 20% increase

Step-by-step explanation:

first, you have to find the amount of change (how much her points scored increased

second , you would divide $\frac{26}{130}$ which equals 0.2

then you would multiply by 100 or move the decimal two places to the right

which would equal 20%

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4. How fast was a driver going if the car left skid marks that were 32 feet long on dry concrete? (The coefficient of friction i

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Answer:

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Step-by-step explanation:

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3 years ago

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Read 2 more answers

7. Which of the following can be determined from the graph below?

tatyana61 [14]

Answer:

The ordered pair (6,25) is a solution to both

$y=-\frac{5}{2}x+40$ and $y=\frac{5}{3}x+15$

Step-by-step explanation:

Part 7)

<em>step 1</em>

Find the equation of the line with positive slope

take the points (0,15) and (9,30)

<em>Find the slope</em>

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

substitute the given values

$m=\frac{30-15}{9-0}$

$m=\frac{15}{9}$

simplify

$m=\frac{5}{3}$

Find the equation of the line in slope intercept form

$y=mx+b$

we have

$m=\frac{5}{3}$

$b=15$

substitute

$y=\frac{5}{3}x+15$

<em>step 2</em>

Find the equation of the line with negative slope

take the points (0,40) and (8,20)

<em>Find the slope</em>

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

substitute the given values

$m=\frac{20-40}{8-0}$

$m=-\frac{20}{8}$

simplify

$m=-\frac{5}{2}$

Find the equation of the line in slope intercept form

$y=mx+b$

we have

$m=-\frac{5}{2}$

$b=40$

substitute

$y=-\frac{5}{2}x+40$

step 3

Find the solution of the system

we know that

The solution of the system of equations is the intersection point both graphs

The intersection point is (6,25) ----> see the graph

therefore

The ordered pair (6,25) is a solution to both $y=-\frac{5}{2}x+40$ and

$y=\frac{5}{3}x+15$

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3 years ago