Find the indicated sum.a1 = -2, r = 3; find s5
A. - 121
B. -26
C. - 242
D. 242
Answer: C
Mathematics
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Find the mass of the wire that lies along the curve r and has density ?.C1: r(t) = (8 cos t)i + (8 sin t)j, 0 ? t ? 
;C2: r(t) = 8j + tk, 0 ? t ? 1; ? = 7t5
A. 
units
B. 
?5 units
C. 
?5 units
D. 
units
Mathematics
Use a calculator to find the approximate value of the expression. Round the answer to two decimal places.sin 14°
A. 0.13 B. 0.99 C. 1.10 D. 0.24
Mathematics
Solve the problem.The logistic growth function f(t) = 
models the number of people who have become ill with a particular infection t weeks after its initial outbreak in a particular community. How many people were ill after 5 weeks?
A. 250 people B. 20,000 people C. 14,664 people D. 20,400 people
Mathematics
Write the rational expression in lowest terms.
A. 
B. 
C. 
D. 
Mathematics