Find the exact value of the indicated trigonometric function of the angle ? in the figure. Rationalize the denominator where necessary.Find sin ?.

A.
B.
C.
D.  


Answer: B

Mathematics

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The population of Americans age 55 yr and over as a percent of the total population is approximated by the function    where t is measured in years, with   corresponding to 2000.

? Compute . Round your answer to the nearest thousandth. ? __________% per year in the second power Fill in the blank(s) with the appropriate word(s).

Mathematics

Simplify the expression.4 + 6(x + 3y)

A. 4 + 18xy B. 10x + 3y C. 4 + 6x + 3y D. 4 + 6x + 18y

Mathematics

Match the quadratic function with its graph.f(x) = x2 - 4

A.

B.

C.

D.

Mathematics

Provide an appropriate response.A student solved an equation by the quadratic formula and reached the step  x = .What are the solutions of the original equation?

A. - 
B. - , - 
C. - 3, 
D. The equation has no real number solutions.

Mathematics