Evaluate. If necessary, find common denominators and simplify completely.3
+ 5
A. 8
B. 8
C. 8
D. 9
Answer: D
Mathematics
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Solve the problem.A pantograph is a mechanical device that can be used to draw enlargements or reductions. The pantograph below has a fixed point O. If point P is moved over a picture, P' traces out the copy of the picture, what is the scale factor of the dilation? Assume all of the points along the strips are the same distance apart.
A. 2 B. 1/3 C. 3 D. 1/2
Mathematics
Solve for x and y using the substitution method.
x + 3y = 6 2x - y = 5
Mathematics
Write the expression in terms of sine and cosine, and simplify so that no quotients appear in the final expression.(1 + cot ?)(1 - cot ?) - csc2 ?
A. 0 B. -2 cot2 ? C. 2 cot2 ? D. 2
Mathematics
Simplify the expression and write the answer without negative exponents.
A. x12 - x11
B. x
C. 
D. x23
Mathematics