Use the information given in the figure.
How many are in set A?
A. 48
B. 27
C. 31
D. 36
Answer: D
Mathematics
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Solve.
x2 + 7x + 40 = 0
A. 8, -20 B. -8, -20 C. 8, 20 D. -8, 20
Mathematics
Solve the problem.A spring with a spring constant of 5 and a 1-unit mass attached to it is stretched 
and released. What is the equation for the resulting oscillatory motion?
A. s(t) = 3 sin 
t
B. s(t) = 3 sin 
t
C. s(t) = 
sin 
t
D. s(t) = 5 sin 
t
Mathematics
Solve the problem.The number of periods needed to double an investment when a lump sum is invested at 11%, compounded semiannually, is given by n = 
. Find n, rounded to the nearest tenth.
A. 12.9 periods B. 17.9 periods C. 8.9 periods D. 15.9 periods
Mathematics
Convert to a rectangular equation.r - 8 cos ? = 3 sin ?
A. x2 - y2 = 8x + 3y B. 8x + 3y = 0 C. x2 + y2 = 8x + 3y D. x2 + y2 = 3x + 8y
Mathematics