Find the reciprocal of the number.7
A. 1
B. - 
C. -7
D. 
Answer: D
Mathematics
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Sketch the coordinate axes and then include the vectors A, B, and A × B as vectors starting at the origin.u = 2i + j, v = i - 2j
What will be an ideal response?
Mathematics
Decide whether the composite functions, f ? g and g ? f, are equal to x.f(x) = 4x, g(x) = 
A. No, yes B. Yes, yes C. Yes, no D. No, no
Mathematics
Find the product and simplify.
? 
A. 3
B. 
C. 3
D. 
Mathematics
Multiply.(9y2 - 4y + 7)(5y - 8)
A. -27y3 + 12y2 - 21y B. -27y3 - 52y2 + 21y C. 45y3 + 52y2 + 3y - 56 D. 45y3 - 92y2 + 67y - 56
Mathematics