Add or subtract the rational numbers. Express the sum or difference as a rational number in lowest terms.
+ 
A. 
B. 
C. - 
D. - 
Answer: A
Mathematics
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Perform the multiplication and simplify.
?
?
A. 
B. 
C. 
D. 
E. ?
Mathematics
Use trigonometric identities to find the exact value.
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.Find the mass of a sphere of radius 5 if 
k a constant.
A. 25k? B. 125k? C. 1250k? D. 625k?
Mathematics
Provide an appropriate response.If a = 4.23, b = 10.07, and c = 10.92, express sin B as a decimal to the nearest ten-thousandth.
A. 2.5816 B. 0.3874 C. 1.0844 D. 0.9222
Mathematics