Mya is doing a 45-minute cardio workout. She has completed 4/5 of the workout. In how many minutes will her workout be done?

9 minutes

Step-by-step explanation:

We can start by dividing 45 by 5, the denominator which is

9

then we can multiply that by the numerator 4, which is

36

finally, we subtract 36 from 45 which is

9

answer: bearing in mind that a rectangle has a perimeter of length + length + width + width.

step-by-step explanation:

p = perimeter

l = length

x=width

p = 2l + 2x

p = 2(l+x)     < ==== perimeter of the base of the box.