Tell whether the statement is true or false.Let A = {7, 8, 9, 10, 11, 12}, B = {9, 11, 13}, C = {7, 8, 10, 12}, D = {7, 12}, and B ? C

A. True
B. False


Answer: A

Mathematics

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Provide an appropriate response.A steel sleeve with outside diameter of 6 in. measures 3 1/2 in. across the inside. The sleeve will be babbitted to fit a 1.8 in.-diameter motor shaft. What must the thickness of the babbitt be (in thousandths)? The babbitt is shaded.

A. 2.1 in. B. 0.85 in. C. 1.25 in. D. 1.7 in.

Mathematics

Solve the problem.A formula used by an engineer to determine the safe radius of a curve, R, when designing a road is:  where ? is the superelevation of the road and V is the velocity (in feet per second) for which the curve is designed. If   ft per sec, f = 0.1 and  find R. Round to the nearest foot.

A. R = 1970 ft B. R = 1977 ft C. R = 1973 ft D. R = 1983 ft

Mathematics

Write the fraction in decimal notation.

A. 1.
B. 1.3
C. 1.3
D. 1.

Mathematics

Evaluate the expression.3

A.
B.
C. - 
D. - 

Mathematics