Factor.49 - z2
A. (7 - z)(7 + z)
B. (7 + z)2
C. (z - 7)(z + 7)
D. (7 - z)2
Answer: A
Mathematics
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Solve the problem.One maid can clean the house in 7 hr. Another maid can do the job in 8 hr. How long will it take them to do the job working together?
A. 3
hr
B. 
hr
C. 56 hr
D. 
hr
Mathematics
Evaluate the double integral
?
?
for the given function f(x, y) and the region R.
?
; R is bounded by 
and y = x.
?
A. 
B. 
C. 
D. 
Mathematics
Solve and graph.x ? 4 or x ? 7
A. [-7, -4]
B. (-?, 4] ? [7, ?)
C. (4, 7)
D. (-4, 7)
Mathematics
Determine if the infinite geometric series converges or diverges. If the series converges, find its sum.4 - 1 + 
- . . .
A. diverges
B. converges, - 1
C. converges, 
D. converges, 4
Mathematics