Factor completely.18x2 - 63x - 36
A. 9(2x - 1)(x + 4)
B. (18x - 9)(x + 4)
C. 9(2x + 1)(x - 4)
D. prime
Answer: C
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The figure shows two right triangles drawn at 
to each other.
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If 
, 
, and 
, find x and then find h.
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Apply the rules regarding the use of significant digits when determining your answer.
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What will be an ideal response?
Solve the problem.Consider the quadratic model h(t) = -16t2 + 40t + 50 for the height (in feet), h, of an object t seconds after the object has been projected straight up into the air. Find the maximum height attained by the object. How much time does it take to fall back to the ground? Assume that it takes the same time for going up and coming down.
A. maximum height = 50 ft; time to reach ground = 2.5 seconds B. maximum height = 75 ft; time to reach ground = 1.25 seconds C. maximum height = 50 ft; time to reach ground = 1.25 seconds D. maximum height = 75 ft; time to reach ground = 2.5 seconds
Arrange in order from smallest to largest.2.954, 2.549, 2.594, 2.459
A. 2.954, 2.549, 2.594, 2.459 B. 2.954, 2.594, 2.549, 2.459 C. 2.459, 2.594, 2.549, 2.954 D. 2.459, 2.549, 2.594, 2.954
A biology class performs an experiment comparing the quantity of food consumed by a certain kind of moth with the quantity supplied. The model for the experimental data is given by
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where x is the quantity (in milligrams) of food supplied and y is the quantity (in milligrams) of food consumed.
Select the correct graph of this model.
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A. ?
B. ?
C. ?
D. ?
E. ? 