Solve the problem.Find the mass of a sphere of radius 8 if 
k a constant.
A. 64k?
B. 512k?
C. 4096k?
D. 8192k?
Answer: C
Mathematics
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Evaluate.x - y, where x = 18.122 and y = -8.64
A. 9.482 B. -9.582 C. 26.762 D. 10.482
Mathematics
Find the unit tangent vector of the given curve.r(t) = 3t5i - 12t5j + 4t5k
A. T(t) = 
i - 
j + 
k
B. T(t) = 
i - 
j + 
k
C. T(t) = 
i - 
j - 
k
D. T(t) = 
i + 
j + 
k
Mathematics
Solve.A clothing company sells jackets for $130 per jacket. The company's fixed costs are $5000 and the variable costs are $120 per jacket. Use a graph to determine the break-even point for production.
A. (1000, 65,000) B. (500, 130,000) C. (1000, 130,000) D. (500, 65,000)
Mathematics
Find the product. Leave answer reduced to lowest terms.
? 
A. 6x7(r + s)
B. 
C. 
D. 
Mathematics