Solve the problem.A contractor mixes concrete from bags of pre-mix for small jobs. How many bags with 8% cement should he mix with 4 bags of 24% cement to produce a mix containing 12% cement?
A. 12 bags
B. 16 bags
C. 14 bags
D. 21 bags
Answer: A
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Determine if the ordered pair is a solution to the given inequality.6x + 4y ? 40; (4, 4)
A. Yes B. No
Translate the stated rule or relationship to a formula.The length, l, of a dog in inches is 2.5 times the shoulder height, h, in inches plus 6.
A. l = h + 8.5 B. l = 2.5h + 6 C. l = 6h + 2.5 D. l = 2.5h
Find the expected value.A new light bulb has been found to have a 0.02 probability of being defective. A shop owner receives 500 bulbs of this kind. How many of these bulbs are expected to be defective?
A. 20 B. 100 C. 10 D. 500
Factor the expression completely. If the polynomial is prime, state this as your answer.x4 - t4
A. (x2 + t2)(x - t)(x - t) B. (x2 + t2)(x - t)(x + t) C. (x + t)2(x - t)2 D. (x2 + t2)(x2 - t2)