Solve the problem.y varies directly as z2 and y = 294 when z = 7. Find y when z = 9.
A. 378
B. 63
C. 486
D. 42
Answer: C
Mathematics
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Which of the following is the reflection, on a coordinate system, across the x-axis, for the triangle with points: (2,1), (4,1), and (4,3). ?
A. ?(2,-1), (4,-1), (4,-3) B. ?(2,1), (4,1), (4,-3) C. ?(-2,1), (-4,1), (-4,3) D. ?(-2,-1), (-4,-1), (-4,-3) E. ?None of the above.
Mathematics
Combine like terms to simplify the expression.p3 - p2q + 8p2q + q3
A. p3 + 7p2q + q3 B. p3 + 9p2q + q3 C. 7p5q4 D. p3 + 7p2 + 7q + q3
Mathematics
Find the exact value of the expression if ? = 45°. Do not use a calculator.f(?) = sec ?Find f(?).
A. 
B. 
C. 
D. -
Mathematics
Rationalize the denominator.
A. 11
- 6
B. 11
- 66
C. 11
+ 66
D. 
Mathematics