Solve the system.
+ 
= 
- 
= 
A. {(-9, 4)}
B. {(4, -9)}
C. {(-4, 9)}
D. {(4, 8)}
Answer: B
Mathematics
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Find the derivative of y with respect to the independent variable.y =log8
A. 
B. 
(sec ? csc ? - ln 5 -1)
C. 
(cot ? - tan ? - ln 5 -1)
D. e8(cos ? - sin ? - e?5?)
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Determine whether the nonincreasing sequence converges or diverges.a1 = 1, an+1 = 4an - 6
A. Converges B. Diverges
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Express the percent as a decimal.67%
A. 0.067 B. 0.67 C. 6.7 D. 67.0
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A triangle with vertices at (x1, y1), (x2, y2), and (x3, y3) has area equal to the absolute value of D, where D = 
.Find the area of the triangle having vertices at P, Q, and R.P(1, -2), Q(1, 3), R(5, -1)
A. 7 B. 0 C. 20 D. 10
Mathematics