Jack's average in math for the first nine week was an 88. His second nine weeks average decreased 12.5 . What was his average fo
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Let
l------> the length side of the rectangle
w----> the width side of a rectangle
b----> the base of the triangle
h----> the height of the triangle
we know that
the area of the yard is equal to
Solve for b------> ( that means clear variable b)
Subtract both sides
Divide by both sides
therefore
<u>the answer is the option B</u>
The quantity A minus l times w all divided by 0.5 times h