For expression , replace z with 90°, and then simplify as much as possible.
?

A.
B. ?
C. ?
D. ?
E. ?

Answer: B

Mathematics

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Solve the problem.The input-output matrix for an economy is    Output:   Agri.  Mfg. Input:   = TThe demand matrix is D = Find the internal consumption.

A.  

B.
 
C.  

D.

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Find the LCM of the set of numbers.16, 18, and 126

A. 1008 B. 2016 C. 3024 D. 864

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Solve the problem.A wheel with a 40-inch radius is marked at two points on the rim. The distance between the marks along the wheel is found to be 11 inches. What is the angle (to the nearest tenth of a degree) between the radii to the two marks?

A. 13.8° B. 17.8° C. 15.8° D. 11.8°

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Let a and b represent the lengths of the legs of a right triangle and let c represent the length of the hypotenuse. Values for two of the three lengths are given. Find the third length.a = 9 and b = 12

A. 11 B. 14 C. 8 D. 15

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Mathematics