Find the sum of the arithmetic sequence.3, 5, 7, 9, ..., 21
A. 39
B. 23
C. 20
D. 120
Answer: D
Mathematics
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Graph the curve described by the function, indicating the positive orientation.r(t) = 2cos t i + 3j + 2 sin t k, for 0 ? t ? 2?
A. 
B. 
C. 
D. 
Mathematics
Use factoring techniques to solve the equation.x2 + 20 = 9x
A. {-5, -4} B. {-5, 4} C. {5, -4} D. {5, 4}
Mathematics
Determine whether the given number is approximate or exact.The radius of the planet is 3435 km.
A. Approximate B. Exact
Mathematics
Provide an appropriate response.The amount of a loan is:
A. installment price - payments + purchases B. installment price - interest - down payment C. the installment price + interest - down payment D. installment price - interest + down payment
Mathematics