Answer: He will require 10.07 cubic feet of sand for the wheelbarrows.
Step-by-step explanation:
Given that
the ratio of wheelbarrows filled with sand to those filled with concrete is expressed as

The volume of concrete in wheelbarrows is 248 cubic feet.
Then the volume of sand in wheelbarrows can be found as

Therefore, he will require 10.07 cubic feet of sand for the wheelbarrows.
X - 9 + 2wx = y Add 9 to both sides of the equation to isolate terms.
Next, you get x + 2wx = y + 9. After that, factor out x to obtain x (1 + 2w) = y + 9.
Lastly, divide every term by (1 + 2w) yielding x = (y + 9) / (1 + 2w).
Answer:
To express the ratio of a number x with four plus two, you can set up the equation:
= 4x + 2 = 0
= 4x = -2
= x = -2/4 = -1/2
Step-by-step explanation:
I hope this helps!