Solve the inequality. Write the solution set in interval notation.6(x - 5) + x ? 7(x - 3) - 9
A. all real numbers
B. (-?, 0)
C. ?
D. (30, ?)
Answer: A
Mathematics
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Solve the problem.Suppose that the radius r and volume V = 
?r3 of a sphere are differentiable functions of t. Write an equation that relates dV/dt to dr/dt.
A. 
= 4?r2
B. 
= 4?
C. 
= 
?r2
D. 
= 3r2
Mathematics
Solve the problem. 3xy = z2 x - y + z = 3x2 + y2 - 2z2 = -72
A. {(3, 9, 9), (-3, -9, 9)} B. {(3, 9, 9), (9, 3, 9)} C. {(3, 9, 9), (-9, -3, 9)} D. {(-3, -9, 9), (9, 3, 9)}
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Find 
.
?
What will be an ideal response?
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Solve the equation using the quadratic formula. Simplify irrational solutions, if possible.x2 + 7x + 3 = 0
A. 
B. 
C. 
D. 
Mathematics