Find the exact value of the expression.sin 20° cos 100° + cos 20° sin 100°
A. 
B. 
C. - 
D. - 
Answer: B
Mathematics
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Use implicit differentiation to find the specified derivative at the given point.Find 
at the point 
for ex2cos yz = 0.
A. - 2
B. 
C. - 
D. 2
Mathematics
Simplify the expression.5 - 5(4w - 2) + w
A. 
w - 15
B. 19w - 15
C. 19w + 15
D. 
w + 15
Mathematics
Find the solution set of the equation. If the equation has no solution write ? and if the equation is an identity so state.
= 
A. ?
B. 
C. 
D. 
Mathematics
Graph the ellipse.5x2 + 25y2 = 225 
A. 
B. 
C. 
D. 
Mathematics