Solve the problem.Let angle POQ be designated ?. Angles PQR and VRQ are right angles. If ? = 45°, find the exact length of OV. 
A. 
B. 
C. 1
D. 0
Answer: A
Mathematics
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Solve the combined inequality and graph the solution set. Write the solution in interval notation.7x + 2 > 6x + 1 ? 10x
A. ?
B. 
C. 
D. (-?, ?)
Mathematics
Subtract.4x4?+ 7x3?+ 4
A. 3x4 + 3x3 - x2 - 8x + 4 B. 3x4 + 11x3 + x2 - 8x + 4 C. 3x4 + 11x3 - x2 + 8x + 4 D. 3x4 + 11x3 + x2 - 4x
Mathematics
Convert the fraction or mixed number to a decimal.
A. 0.4 B. 0.45 C. 0.35 D. 0.25
Mathematics
Solve the problem.For the equation y = - 
sin(4x + 3?), identify (i) the amplitude, (ii) the phase shift, and (iii) the period.
A.
(i) -  | (ii) -  | (iii) 4 |
B.
| (i) 2 | (ii) 3? | (iii)  |
C.
(i)  | (ii) -  | (iii)  |
D.
(i)  | (ii) -  | (iii) 4 |
Mathematics