Provide an appropriate response.Find ? if cos ? = 0.6896 rounded to the nearest tenth of a degree.
A. 0.8°
B. 42.6°
C. 34.6°
D. 46.4°
Answer: D
Mathematics
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Solve by any method. If there is not one solution to a system, state why.
(x + y) = 1
(x - y) = - 
A. No solution, inconsistent system B. (-4, 6) C. (-5, 7) D. (4, 7)
Mathematics
Solve the equation.-4x = -16
A. 4 B. 2 C. 12 D. -12
Mathematics
Indicate whether the rational expressions are equivalent.
and 
A. The expressions are not equivalent. B. The expressions are equivalent.
Mathematics
Add or subtract as indicated and write the result in standard form.8i + (-7 - i)
A. 7 - 7i B. 7 - 9i C. -7 + 9i D. -7 + 7i
Mathematics