Write an equation that expresses the relationship. Use k as the constant of variation.x varies jointly as y and the cube of z.
A. x + y + z3 = k
B. x = kyz3
C. xyz3 = k
D. x = k + y + z3
Answer: B
Mathematics
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A. 
B. 
C. 
D. 
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a and b represent the two legs of a right triangle, while c represents the hypotenuse. Find the length of the unknown side.
A. b = 25 B. b = 18 C. b = 20 D. b = 24
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Graph the two functions on one coordinate plane.f(x) = x2h(x) = x2 + 2.
A. 
B. 
C. 
D. 
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Evaluate.(0.74) - (-0.87)
A. 1.61 B. 0.23 C. 0.13 D. -0.6438
Mathematics