Solve the system by substitution.x = 3y + 7y = x - 5
A. (-4, -1)
B. (-4, 1)
C. (4, -1)
D. (4, 1)
Answer: C
Mathematics
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Solve the equation for solutions in the interval [0, 2?).sin22x = 1
A. 
B. 
C. ?
D. 
Mathematics
Use reference angles to find the exact value of the expression. Do not use a calculator.cot 
A. - 
B. 
C. - 
D. 
Mathematics
Find the center of mass of a thin plate of constant density covering the given region.The region bounded by the parabola x = y2 and the line x = 1
A. 
= 0, 
= 
B. 
= 
, 
= 0
C. 
= 
, 
= 0
D. 
= 1, 
= 0
Mathematics
Solve the application problem. Round to the nearest cent.
How much should be deposited monthly into a sinking fund over 4 years to accumulate $119,000 if the money earns 12% compounded monthly?
A. $1,943.27 B. $1,485.12 C. $2,341.92 D. $2,970.24
Mathematics