Combine like terms.-7z - 6z - 8z
A. -21z2
B. 21z
C. -21z
D. 21z2
Answer: C
Mathematics
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Find the LCM.60, 80, 50
A. 240 B. 600 C. 400 D. 1200
Mathematics
Write a chain rule formula for the following derivative.
for w = f(x, y, z); x = g(s, t), y = h(s, t), z = k(s)
A. 
= 
+ 
B. 
= 
+ 
C. 
= 
+ 
D. 
= 
Mathematics
Draw the angle.
A. 
B. 
C. 
D. 
Mathematics
Find the area of the shaded region.The top surface of the wings of a test plane must be coated with a special lacquer that costs $100 per square meter. Find the cost to coat the white wing surface of the plane.
A. $26,450.00 B. $84,640.00 C. $18,400.00 D. $9200.00
Mathematics