Use addition to check the subtraction problem. If the answer is incorrect, find the correct answer.
31
A. Incorrect; should be 20
B. Incorrect; should be 30
C. Correct
D. Incorrect; should be 29
Answer: B
Mathematics
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Calculate the area of the surface S.S is the lower portion of the sphere x2 + y2 + z2 = 25 cut by the cone z = 
.
A. 10
?
B. 25
?
C. 25
D. 50
?
Mathematics
Solve. Where appropriate, include approximations to the nearest thousandth. If no solution exists, state this.log2 |x| = 5
A. -32 B. -32, 32 C. 32 D. No solution
Mathematics
Write a chain rule formula for the following derivative.
for w = f(p, q, r); p = g(t), q = h(t), r = k(t)
A. 
= 
+ 
+ 
B. 
= 
+ 
+ 
C. 
= 
+ 
+ 
D. 
= 
+ 
+ 
Mathematics
Solve the equation.
= 
A. 
B. 
C. ?
D. 
Mathematics