Estimate the product by first rounding the factors as indicated.178 × 49 (nearest ten)
A. 8720
B. 9000
C. 8722
D. 230
Answer: B
Mathematics
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Solve the problem.Find the amount of money in an account after 9 years if $2800 is deposited at 8% annual interest compounded semiannually.
A. $5672.29 B. $5711.68 C. $5597.21 D. $5738.68
Mathematics
For the curve r(t), find an equation for the indicated plane at the given value of t.r(t) = 
(1 + t)3/2i + 
(1 - t)3/2j + 
tk; osculating plane at t = 0.
A. x - y = 0
B. x - y = - 
C. x - y = 
D. x - y = 
Mathematics
Simplify the given expression by giving the results in terms of one-half the given angle. Then use a calculator to verify the result.
A. 0.809 B. -0.5878 C. 0.891 D. 0.454
Mathematics
Perform the indicated operation or operations.
+ 
A. 
B. 
C. 
D. 
Mathematics