Solve the problem.The library is to be given 7 books as a gift. The books will be selected from a list of 23 titles. If each book selected must have a different title, how many possible selections are there?

A. 512,936,840
B. 1236
C. 5040
D. 245,157


Answer: D

Mathematics

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Solve the linear inequality. Express the solution using set-builder notation and interval notation. Graph the solution set. - x < -2

A.

B.

C.

D.

Mathematics

Decide whether the statement makes sense. Explain your reasoning.My friend wants to lose 15 pounds, but I think that's too much. I think 10 kilograms would make more sense.

What will be an ideal response?

Mathematics

Convert the degree measure to radian measure. Use the value of ? found on a calculator and round as indicated.Round to the nearest hundredth of a radian.52°54'

A. 0.9 B. 0.89 C. 0.91 D. 0.92

Mathematics

Solve the problem using the quadratic formula.For a car traveling at x mph, stopping distance is estimated by the formula d(x) = x2 + x. Find a (maximum) safe speed for a stopping distance of 630 ft. Round your answer to the nearest mph.

A. 65 mph B. 70 mph C. 73 mph D. 61 mph

Mathematics