Ashley can help his father and it is a very easy that she can solve for the triangular portion of the roof by using the formula of the area of a triangle which is equivalent to A=1/2*H*B. Ashley needs to measure the length of both base and height of the triangular portion of the roof. Then, she can proceed with the equation.
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lucy is buying shoes they are on sale and have been marked down to 8 dollars instead of 20 20-8=12 the shoes were marked down 12 dollars
Brainly is going bankrupt and there making their membership prices higher instead of ten dollars its 15 dollars 15-10=5 they were marked up 5 dollars
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hope this helps
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