Clear fractions then solve by substitution.2x - 2y = -64x + 
y = - 
A. {(-1, 0)}
B. ?
C. {(2, 0)}
D. {(-2, 1)}
Answer: D
Mathematics
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A. 17% B. 19% C. 8% D. 16%
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First, use front end rounding to estimate each answer. Then find the exact answer.
+ 
What will be an ideal response?
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Find the inverse matrix 
What will be an ideal response?
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Solve the problem.A radio transmission tower is 120 feet tall. How long should a guy wire be if it is to be attached 8 feet from the top and is to make an angle of 22° with the ground? Give your answer to the nearest tenth of a foot.
A. 129.4 ft B. 120.8 ft C. 299.0 ft D. 320.3 ft
Mathematics