Question

HELP PLEASE
Pls answer this question asap, I need help ;-;

Answer 1

4 seconds

Explanation:

Rate : 0.4 feet per second = 0.4 ft / 1 second

To solve for the missing number in the ratio, set the ratio equal to the given rate:

`(0.4ft)/(1sec) =(xft)/(ysec)`

`(0.4ft)/(1sec)=((3)/(10) ft)/((3)/(x) sec)`

`(0.4ft)/(1sec) = (0.3ft)/((3)/(x) sec)`

`0.4ft * (3)/(x) sec = 0.3ft * 1 sec`

`(3)/(x) =0.3/0.4 = 0.75`

3 = 0.75x

x = 3/0.75 = 4 seconds

0.3ft / 0.75 sec = 0.4 ft / 1 sec