Solve the equation. First simplify the expression by combining like terms.5(y + 3) = 6(y - 5)
A. {15}
B. {-15}
C. {45}
D. {-45}
Answer: C
Mathematics
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Solve the problem.Suppose that z varies jointly with x and y and that z = 22.5 when x = 9 and 
Find the constant of proportionality k. Then, find z when x = 5 and 
A. k = 0.3; z = 13.5
B. k = 1012.5; z = 
C. k = 0.5; z = 22.5
D. k = 5; z = 225
Mathematics
Solve the problem.Find the 16th triangular number that corresponds to the following dot sequence. 
A. 136 B. 257 C. 120 D. 128
Mathematics
Write a polar equation in r and of a hyperbola with the focus at the origin, with the eccentricity 7 and directrix r = -12csc?.
What will be an ideal response?
Mathematics
Find the requested area or volume.Area of a rectangle: Length = 
inches, width = 
inches
A. 
in.2
B. 4 in.2
C. 2
in.2
D. 10
in.2
Mathematics