Express using positive exponents. Then simplify.-5-4
A. 625
B. 
C. -625
D. - 
Answer: D
Mathematics
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Add or subtract. Simplify your answer to lowest terms.
- 
A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response.Is it true that in order to multiply a number by a negative power of ten, you must move the decimal point to the left as many places as indicated by the absolute value of the exponent on the ten?
A. Yes B. No
Mathematics
Find the exact value of the expression.sec 
A. 
+ 
B. 
- 
C. 
D. 
- 
Mathematics
Find the exact value of the expression. Do not use a calculator.cot 45° - sin 45°
A. - 
B. 
C. 
D. 
Mathematics