Solve the system by addition. 7x - 35 = 8y 3x + 5y = -44
A. {(-4, -6)}
B. ?
C. {(-3, -7)}
D. {(-3, -6)}
Answer: C
Mathematics
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Find the interval of convergence of the series.
A. 2 ? x < 4 B. 2 < x < 4 C. -4 < x < 4 D. x < 4
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Find the standard equation of the hyperbola.Foci at (±3, 0), transverse axis with length 4
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Mathematics
Write the improper fraction as a mixed or whole number.
A. 30
B. 211
C. 209
D. 
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Perform the indicated operations.Subtract (3x - 30) from the sum of (-2x + 10) and (9x - 5).
A. 10x - 25 B. 8x + 45 C. 4x + 35 D. -4x - 35
Mathematics