Find the difference and simplify the answer. 
- 
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Divide.
A. y - 9
B. y2 + 9
C. y + 9
D. y + 
Mathematics
Solve the system of equations using elimination.
A. x = 2, y = 3; x = -2, y = 3 ; x = 2, y = -3; x = -2, y = -3 B. x = 2, y = -3; x = 2, y = 3 C. x = -2, y = -3; x = -3, y = -2 D. x = 2, y = 3; x = 3, y = 2; x = -2, y = -3; x = -3, y = -2
Mathematics
Write as a decimal number rounded as indicated.
; Round to the nearest tenth.
A. 0.8 B. 0.7 C. 0.3 D. 0.6
Mathematics
Solve the problem.A pendulum swings though an angle of 20° each second. If the pendulum is 55 inches long, how far does its tip move each second? If necessary, round the answer to two decimal places.
A. 19.2 in. B. 20.49 in. C. 21.63 in. D. 17.35 in.
Mathematics