A contractor is pouring a concrete driveway. The perimeter is 108 ft. What length will the driveway be if the width is 12 ft.?

42 ft

Step-by-step explanation:

Perimeter is the same as w+w+l+l or 2w+2l

width= 12 ft and there are 2 widths, so 12x2= 24ft

108-24= 84

84/2 = 42 ft

answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.

question 1: step-by-step explanation:

1/4 of 84 = 84÷4= 21