Solve the system by substitution.4y - 4 = -x8x - 7y = -7
A. {(1, 0)}
B. {(1, 1)}
C. {(0, 0)}
D. {(0, 1)}
Answer: D
Mathematics
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Evaluate.
+ 
A. 
B. 
C. 
D. 
Mathematics
Find the intercepts of the circle. Round to the nearest hundredth, when necessary.x2 + y2 = 4
A. The two x-intercepts are x = 4 and x = -4, and the two y-intercepts are y = 4 and y = -4. B. The x-intercept is x = 2, and the y-intercept is y = 2. C. The two x-intercepts are x = 2 and x = -2, and the two y-intercepts are y = 2 and y = -2. D. The x-intercept is x = 4, and the y-intercept is y = 4.
Mathematics
Find x.
= -90
A. -3 B. 5 C. 3 D. -5
Mathematics
Find the exact value of the indicated trigonometric function of ?.csc ? = - 
, ? in quadrant IIIFind cot ?.
A. - 
B. - 
C. 
D. - 
Mathematics