Classify the number as rational or irrational.
A. Rational
B. Irrational
Answer: A
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Factor completely.32x2 + 80xy + 50y2
A. 2(4x + 5y)2 B. 2(16x2 + 40xy + 25y) C. (8x + 10y)(4x + 5y) D. 2(4x - 5y)(4x + 5y)
Divide.
A. 2x3 - 7x2 + 5
B. 2x3 - 28x7 + 20x5 + 20x3 + 3x2
C. 8x8 - 7x2 + 5 + +
D. 2x3 - 7x2 + 5 + +
A lamppost is 14 feet high and casts a 19-foot shadow. At the same time of day, a flagpole directly behind the lamppost casts a 25-foot shadow.
Write a proportion that can be used to find the height, H, of the flagpole.?
Solve the problem, if possible. Round your answer to the nearest tenth, when appropriate.A square has an area of 49 in.2. If the same amount is added to the length and removed from the width, the resulting rectangle has an area of 45 in.2. Find the dimensions of the rectangle.
A. 5 in. by 9 in. B. 5 in. by 10 in. C. 4 in. by 9 in. D. Cannot be determined without additional information