Use the fundamental identities to simplify the expression.sin2 x(cot2 x + 1)
A. 1
B. tan2 x
C. cos2 x + 1
D. -1
Answer: A
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Translate the phrase to an algebraic expression. Use x to represent "a number."Multiply a number by -15.
A. x ÷ (-15) or 
B. -15 + x
C. (-15) ÷ x or 
D. x ? (-15) or -15x
Solve the system, using Cramer's rule, if possible.2x + 8y + 6z = 204x + 2y - 2z = -23x - y + z = 11
A. {(2, -1, 4)} B. {(-1, 2, 1)} C. {(2, 1, 6)} D. ?
Use the portion of the stock table shown below to answer the questions that follow. Round dollar amounts to the nearest cent when necessary.
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If you have $2,688.62, how many shares of A1 can you purchase at its closing price?
a. 101
b. 72
c. 82
d. 56
e. 140
Use a graphing calculator to estimate f '(a) for the given value of a.f(x) = x2 sin x; a = 2
A. 1.9726 B. 3.2871 C. 0.0770 D. 1.4726