Solve and check.
- 
= 
A. x = -2
B. x = 
C. x = -12
D. x = 12
Answer: D
Mathematics
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Simplify.
A. 8
B. 5
C. 4
D. 2
Mathematics
Solve.A mason is building a drystack stone wall that is 3 feet high. If each stone is 4 inches high, how many rows of stone will the wall contain? (1 foot = 12 inches)
Fill in the blank(s) with the appropriate word(s).
Mathematics
Losses in a long telephone line reduce a 20-watt input signal to an output of 5 watts. Find the db gain. (Because it is a loss, the "gain" will be negative.) ? Please give the answer to two decimal places.
Fill in the blank(s) with the appropriate word(s).
Mathematics
Solve the problem. Leave your answer in polar form.z = 6
w = 12
Find zw.
A. 36
B. 36
C. 72
D. 72
Mathematics