Simplify.
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Solve the problem.Find the equation for the tangent plane to the surface 
at the point 
A. -10x - 10y + 12z = 8 B. x + y + z = 8 C. x + y + z = 1 D. -10x - 10y + 12z = 1
Mathematics
Find gross earnings. Overtime is one-and-a-half times the normal per piece rate.Michelle Johnson decorates cookies for a bakery. She is paid $0.3 each and is charged $0.1 per rejection. One week she decorated 813 cookies at the regular rate, 52 cookies at the overtime rate, and had 29 chargebacks.
A. $270.20 B. $267.30 C. $264.40 D. $256.60
Mathematics
Find the mean. If necessary, round to one decimal place.4, 5, 10, 5, 14, 9
A. 6.3 B. 8.3 C. 7.8 D. 9.4
Mathematics
Write the number as a product of a real number and i. Simplify the radical expression.
A. 3i
B. -3
C. 3
D. -3i
Mathematics