Solve the system by the elimination method.x + y = 10x - y = 4
A. ?
B. {(6, 4)}
C. {(-7, 4)}
D. {(7, 3)}
Answer: D
Mathematics
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Calculate using the rules for order of operations.
A. - 
B. 
C. 
D. - 
Mathematics
Use the rules of exponents to simplify the expression. Use positive exponents to write the answer.
A. 
B. x27
C. x2
D. 
Mathematics
Find the angle between vectors v and w. Round the answer to the nearest tenth of a degree.v = 
, w = 
A. 174.8° B. 95.2° C. 5.2° D. 84.8°
Mathematics
Solve the linear equation.3(c - 6) = 4c - 5
A. 4 B. -13 C. -4 D. 13
Mathematics