At 1:00 pm the water level in a pool is 13 inches. At 1:30pm the water level is 18 inches. At 2:30pm the water level is 28 inches. What is the constant rate of change?

Answers

Answer 1

Answer: From the given question we come to know of certain number of facts and they are:
At 1:00 PM the water level of the pond was = 13 inches
At 1:30 PM the water level of the pond was = 18 inches
At 2:30 PM the water level of the pond was = 28 inches
From the above given facts we can easily find the amount of water changing every half an hour.
Amount of increase in water from 1:00PM to 1:30 PM = (18 - 13) inches
= 5 inches
Amount of increase in water level from 1:30PM to 2:30PM = (28 -18) inches
= 10 inches
From the above two deductions we can come to the conclusion the the constant rate of change in water level is 5 inches for every half an hour.

Answer 2

Answer: Per 1/2 an hour it is changes by 5 so the constant rate would be: 5 inches per 1/2 an hour

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mae ling earns a weekly salary of $325 plus a 6.5% commission on sales at a gift shop. How much would she make in a work week if she sold $4800 worth of merchandise?

Answers

6.5% of $4800 is $312, so $312+$325=$637 :)

Find the area of each shape by decomposing it into smaller shapes, and combining their area.

Answers

you can divide this picture into 2 pieces, 1 rectangle and 1 triangle.

To find the rectangle, since the opposite sides are equal to each other, the width=6.

the length is 8.

to find the area, use the formula

A = lw

A= 8 x 6

A = 48 units square

that's for rectangle.

for the triangle, use the formula

A = h x b / 2

height=10-6 = 4

base is 8 because the opposite sides are equal in rectangle.

Substitute height and base in the formula.

A= 4 x 8 / 2

A= 32/2

A=16 units square

That's the area of triangle.

Now, you can add the area of rectangle and triangle.

Total area = area of rectangle + area of triangle

A = 48 + 16

A = 64 units square

There are 9 showings film about endangered species at the science museum.a total of 459 people saw the film.the same number of people were at each showing.about how many people were at each showing?select the numbers the quotient is between.a.40 b.50 c.60 d.70 e.80

Answers

The answer would be B.50

Is 1/2 rational ot irrational

Answers

Rational numbers have decimals that repeat or end. $(1)/(2)$ can be rewritten as .5, which has a clear ending point. So, $(1)/(2)$ is rational.

rational numbers can be written in form a/b
1/2 is a/b

it is rational

SOS help i can't figure out this math problem

Answers

You would subtract each term of g(x) from f(x)

f(x) = 9x^3 + 2x^2 - 5x + 4
g(x) = 5x^3 - 7x + 4

9x^3 - 5x^3 = 4x^3

2x^2 - 0 = 2x^2

-5x - (-7x) = 2x

4 - 4 = 0

FINAL ANSWER:
4x^3 + 2x^2 + 2x

For which values of A, B, and C will Ax + By = C be a vertical line through the point (8, 6)?A. A = 1, B = 0, C = 6
B. A = 1, B = 0, C = 8
C. A = 0, B = 1, C = 6
D. A = 0, B = 1, C = 8