A2 1/2 foot by 12 foot concrete wall is to be built using concrete blocks. find the area of the wall.

Answer : The area of wall = 30 foot²

Explanation:

Length of concrete wall = foot

Breadth of concrete wall = 12 foot

Since, area means product of dimensions so we use the formula mentioned below:

Area of the concrete wall = length× breadth

So, the area of wall = 30 foot²

the difference between a number and 5 is -2.

step-by-step explanation:

notice that the equation you are given has -2 (negative 2) on the right side, not 2. when you subtract 5 from a number n, you are finding the difference between the number and 5.

the difference between a number and 5 is -2.

8(-10x+3.5y-7)

8×-10x + 8×3.5y + 8×-7

-80x + 28y - 56

therefore

-80x+28y-56 is the correct answer