Find the exact value of the expression if ? = 45°. Do not use a calculator.f(?) = cos ?Find 5f(?).

A.
B. -
C.
D. -

Answer: C

Mathematics

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Find the average value of the function f over the given region.f(x, y) = e5x over the square 0 ? x ? , 0 ? y ? .

A.
B.
C. 2e - 1
D. e - 1

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Mathematics

Express the given expression in simplest form with only positive exponents.-4

A. x¹⁶y¹⁶w⁴z²⁰
B.
C.
D.

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Mathematics

Solve the problem.Given the area A of a circle, the formula r = can be used to calculate the radius of the circle. Find the area when the radius is 7.7 cm.

A. A = 59.29 sq cm B. A = 61.15? sq cm C. A = 59.29 ?2 sq cm D. A = 59.29? sq cm

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Mathematics

Find the inverse of the function.f(x) =

A. f^-1(x) =   for x ? 0
B. f^-1(x) =
C. f^-1(x) =   for x ? 0
D. f^-1(x) =  - 8 for x ? 0

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Mathematics