Find the sum.
A. 
B. 
C. 
D. 
E. 
Answer: A
Mathematics
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Rewrite the fractions using the least common denominator.
and 
A. 
and 
B. 
and 
C. 
and 
D. 
and 
Mathematics
Provide an appropriate response.Rationalize the denominator and simplify: 
Fill in the blank(s) with the appropriate word(s).
Mathematics
Find the exact value by using a sum or difference identity.cos 
A. 
B. - 
C. - 
(
- 1)
D. 
(
- 1)
Mathematics
Find the logarithm. Give an approximation to four decimal places.log(2.21 × 105)
A. 0.3444 B. 5.0000 C. 5.3444 D. -4.6556
Mathematics