Find the indicated sum or difference, if it is defined.
+ 
A. 
B. not defined
C. 
D. 
Answer: C
Mathematics
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Solve the problem.Suppose that z varies jointly with x and y and that z = 196 when x = 7 and 
Find the constant of proportionality k. Then, find z when x = 6 and 
A. k = 2; z = 36
B. k = 19,208; z = 
C. k = 0.2; z = 3.6
D. k = 4; z = 72
Mathematics
Form a polynomial f(x) with real coefficients having the given degree and zeros.Degree: 3; zeros: -2 and 3 + i.
A. f(x) = x3 - 4x2 - 2x + 20 B. f(x) = x3 - 4x2 - 10x + 20 C. f(x) = x3 - 8x2 + 2x + 20 D. f(x) = x3 - 6x2 - 10x + 20
Mathematics
Solve. m2 - 10m = -25
A. -5 B. 5 C. -5, 5 D. 10
Mathematics
Factor by grouping.xy + 3x + 2y + 6
A. (x - 3)(y + 2) B. (x - 3)(y - 2) C. (x + 2)(y - 3) D. (x + 2)(y + 3)
Mathematics