Find the sum of the first five terms of the geometric sequence.a = -16, r = -4
A. -3280
B. 816
C. 240
D. -10,280
Answer: A
Mathematics
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Provide an appropriate response.Factor the special product: a2 + 2ab + b2
A. (a + 2b)2 B. (a - b)2 C. (a + b)(a - b) D. (a + b)2
Mathematics
Solve the problem.Find a curve through the point (-10, 1) whose length integral, 1 ? y ? 2, is L = 
A. x = 
B. x = - 10
C. x = 
D. x = - 10y5/2
Mathematics
Convert as indicated. If necessary, round to two decimal places.4.5 liters to gallons
A. 17.06 gal B. 1.17 gal C. 4.28 gal D. 4.77 gal
Mathematics
Solve the problem.The half-life of silicon-32 is 710 years. If 90 grams is present now, how much will be present in 800 years? (Round your answer to three decimal places.)
A. 0 B. 0.037 C. 83.238 D. 41.215
Mathematics