A car is 500 feet behind a train. The train is traveling at a constant speed of 44 feet per second. If the car's speed could be modeled by the equation ()=42
s
(
t
)
=
4
t
2
()=42
s
(
t
)
=
4
t
2
.

(a) How long will it take for the car to catch up to the train?

(b) How many feet did the car travel before it caught up to the train?

step-by-step explanation:

the multiplicative inverse of a fraction a/b is b/a. for the multiplicative inverse of a real number, divide 1 by the number. for example, the reciprocal of 5 is one fifth 1/5 or 0.2, and the reciprocal of 0.25 is 1 divided by 0.25, or 4.

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15

answer: need a picture

step-by-step explanation:

3000000000000000000000