Solve the problem.The weight W of an object on the Moon varies directly as the weight E on earth. A person who weighs 115 lb on earth weighs 23 lb on the Moon. How much would a 157-lb person weigh on the Moon?
A. 31.4 lb
B. 295 lb
C. 785 lb
D. 0.2 lb
Answer: A
Mathematics
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The position vector of a particle is r(t). Find the requested vector.The acceleration at t = 
for r(t) = (10t - 5t3)i + 2tan(3t)j + e3tk
A. a
= - 
?i - 72j + 9e1/4?k
B. a
= - 
?i - 72j + 9k
C. a
= - 
?i + 72j + 9e1/4?k
D. a
= 
?i + 72j + 9e1/4?k
Mathematics
Write as a percent.0.00631
A. 0.631% B. 0.3155% C. 0.0631% D. 0.000631%
Mathematics
Solve the equation for the specified variable.P = 2l + 2w for l
A. l = 
B. l = 
C. l = P - w
D. l = P - 2w
Mathematics
Solve.
- 
= 
A. 
B. 
, - 
C. 
D. 
, - 
Mathematics