Solve the problem.BJ can overhaul a boat's diesel inboard engine in 15 hours. His apprentice takes 30 hours to do the same job. How long would it take them working together assuming no gain or loss in efficiency?
A. 45 hr
B. 10 hr
C. 4 hr
D. 6 hr
Answer: B
Mathematics
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Write the vertex form of the equation of the parabola shown in the given graph. Assume a = ±1.
A. y = -(x + 1)2 - 3 B. y = -(x + 1)2 + 3 C. y = (x + 1)2 - 3 D. y = -(x - 1)2 - 3
Mathematics
In a survey of the dining preferences of 110 dormitory students at the end of the spring semester, the following facts were discovered about Adam’s Lunch (AL), Pizza Tower (PT), and the Dining Hall (DH).
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Mathematics
Convert to a mixed numeral.
A. 7
B. 7
C. 6
D. 8
Mathematics
Evaluate the polynomial.P(x) = -6x2 - 10x - 1, P(-2)
A. 31 B. -15 C. -5 D. -9
Mathematics