Add or subtract. Express the answer as a mixed number.-25
+ 38
A. 13
B. 12
C. 11
D. 12
Answer: B
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Provide an appropriate response.The circle of fifths is generated by starting at a particular musical note and stepping upward by intervals of a fifth. By what factor does the frequency of a tone increase if it is raised by two fifths?
A. 3.32 B. 2.24 C. 1.14 D. 7.94
First, use front end rounding to estimate each answer. Then find the exact answer.Light travels 186,000 miles per second. How many miles does it travel in 
A. estimate: 190,000 ? 800 = 152,000,000 miles; exact: 147,126,000 miles B. estimate: 190,000 ? 790 = 150,100,000 miles; exact: 147,126,000 miles C. estimate: 200,000 ? 790 = 158,000,000 miles; exact: 147,126,000 miles D. estimate: 200,000 ? 800 = 160,000,000 miles; exact: 147,126,000 miles
Find the indicated term for the sequence.an = 3n; a4
A. 64 B. 12 C. 81 D. 27
Add or subtract. Express the answer as a mixed number.9
+ 4
A. 9
B. 14
C. 12
D. 13