Rationalize the denominator and simplify. 
A. 60
B. 
C. 11
D. 
Answer: B
Mathematics
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Find the exact value of the expression.cos 45°
A. 
B. 
C. 
D. 
Mathematics
Write the expression in the standard form a + bi.(-8 + i)(-8 - i)
A. -8 B. 65 C. -63 D. 64
Mathematics
Simplify. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. 
Mathematics
Round the following to the nearest ten, nearest hundred, and nearest thousand.5464
A.
| Ten | 5470 |
| Hundred | 5500 |
| Thousand | 5000 |
B.
| Ten | 5470 |
| Hundred | 5400 |
| Thousand | 6000 |
C.
| Ten | 5460 |
| Hundred | 5500 |
| Thousand | 5000 |
D.
| Ten | 5460 |
| Hundred | 5400 |
| Thousand | 5000 |
Mathematics