Solve the equation.0.6x - 0.2(20 + x) = 1.4(20)

A. 70
B. 40
C. 90
D. 80

Answer: D

Mathematics

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Verify the identity.cot x sec4 x = cot x + 2 tan x + tan3 x

What will be an ideal response?

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Round as indicated.89.2676 to the nearest thousandth

A. 89.258 B. 89.278 C. 89.268

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Refer to the rectangle ABCD, shown below, where . ? ?

A.

and


B.

and


C.

and


D.

and


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Solve the problem.One printer can do a printing job in 11 hr. Another printer can do the same job in 14 hr. How long does it take the two printers to do the job working together?

A. 51 hr
B.  hr
C. 6 hr
D. 5 hr

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Mathematics