Use the power rule for exponents to simplify the expression. Write the answer in exponential form.(-24)3
A. (-2)12
B. 124
C. -64
D. (-2)7
Answer: A
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Find the product, if possible.
A. 
B. 
C. 
D. Not defined
Find the unit tangent vector T and the principal unit normal vector N. r(t) = (cosh t)i + (sinh t)j + tk
A. T = 
(tanh t)i + 
j + 
(sech t)k; N = (sech t)i - (tanh t)k
B. T = - 
(tanh t sech t)i + 
j + 
(sech t)k; N = (-sech t)i - (tanh t)k
C. T = 
(tanh t sech t)i + 
j + 
(sech t)k; N = (sech2 t)i - (sinh t)k
D. T = - 
(tanh t)i + 
j + 
(sech t)k; N = (-sech t)i - (sinh t)k
Find the present value for the given future amount. Round to the nearest cent.A = $38,000, 12 yearsr = 5% compounded semiannually
A. $21,159.82 B. $21,009.26 C. $16,990.74 D. $68,731.59
Solve the problem.If a fair coin is tossed twice, the probability that both tosses will come up heads is
A. 
.
B. 
.
C. 
.
D. 
.
E. none of these