Find the center and radius of the sphere.x2 + y2 + z2 - 4x - 12y - 10z = -49
A. C(2, 6, 5), a = 16
B. C(-2, -6, -5), a = 4
C. C(-2, -6, -5), a = 16
D. C(2, 6, 5), a = 4
Answer: D
Mathematics
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+ 
A. 
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Solve by the substitution method.9x + 9y = 365x - 5y = 20
A. {(4, 0)} B. {(x, y)|5x - 5y = 20} C. ? D. {(3, 1)}
Mathematics
Provide an appropriate response.If you pay $5,500 for a simple interest note that will be worth $6,000 in 21 months, what annual simple interest rate will you earn? (Compute the answer to one decimal place.)
Fill in the blank(s) with the appropriate word(s).
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Use transformations of the graph of y = x4 or y = x5 to graph the function.f(x) = -5x5 
A. 
B. 
C. 
D. 
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