Use a system of linear equations to solve the problem.A flat rectangular piece of aluminum has a perimeter of 60 inches. The length is 14 inches longer than the width. Find the width.
A. 36 in.
B. 30 in.
C. 22 in.
D. 8 in.
Answer: D
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Calculate the flux of the field F across the closed plane curve C.F = xi + yj; the curve C is the closed counterclockwise path around the rectangle with vertices at 
and 
A. 32 B. 0 C. 24 D. 40
Determine the measure of an interior angle of the named regular polygon.Decagon
A. 30° B. 150° C. 144° D. 36°
Use the appropriate identity to find the indicated function value. Rationalize the denominator, if applicable. If the given value is a decimal, round your answer to three decimal places.csc ?, given that sin ? = 
A. -4
B. 
C. 4
D. - 
Solve the problem.In a clinical study, 12 of the 240 subjects receiving a migraine medication developed side effects. What percentage developed side effects?
A. 15% B. 5% C. 7% D. 4%