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Maths Puzzle
Numerical Ability
Assume that the only area formula you know is the formula for the area of a triangle. Explain how to derive the formula for the area of the trapezoid
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Solve for the variable indicated. Show your work.
s = a + (n-1) d solve for n
How do you solve (w-3)-5(w+7)=10(w+3)-(7w+5)?