Use the rules for exponents to rewrite the expression and then evaluate the new expression. (2-2)0
A. 1
B. 
C. 0
D. -4
Answer: A
Mathematics
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Rewrite the fractions as equivalent fractions with the LCD.
and 
A. 
and 
B. 
and 
C. 
and 
D. 
and 
Mathematics
Factor, if possible; if the polynomial is not factorable, write "prime."45 - 14x + x2
A. (x + 9)(x - 5) B. (x - 9)(x + 5) C. (x + 9)(x + 5) D. (x - 9)(x - 5)
Mathematics
Find the exact value of the expression.cos 40° cos 20° - sin 40° sin 20°
A. 
B. 
C. 
D. 
Mathematics
Solve the problem. When needed, use 365 days per year and 30 days per month.An initial investment of $790 is appreciated for 2 years in an account that earns 4% interest, compounded continuously. Find the amount of money in the account at the end of the period.
A. $1302.49 B. $1538.71 C. $855.80 D. $5837.35
Mathematics