140 = 10x + 5y
24 = x + y
x = 4
y = 20
x is the number of $10 bills (So 4 $10 bills)
y is the number of $5 bills (So 20 $5 bills)
<span>A=1/2(a+b)h for h.
First, you need to get rid of 1/2, so divide both sides by 1/2.
A/(1/2) = (a + b)h
You can simplify the </span>A/(1/2) by multiplying by the reciprocal of 1/2, so 2/1.
2A = (a + b)h
Now divide both sides by (a+b).
2A/(a+b) = h
If 1 inch = 2.5 yards then
x inch = 80 yards
cross multiplying we have:
80 × 1 = x × 2.5
x = 80÷ 2.5 = 32 inches
therefore the picnic area is 32 inches in the drawing.
Answer:
x value is 10 as per as the question its value is 10
The answer is B how u ask ? its the formula u need to study more in the text book