Solve and check the equation.-7x = 14
A. {-2}
B. {-21}
C. {1}
D. {21}
Answer: A
Mathematics
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Solve the system using substitution.y = 
x + 
2x - 5y = 9
A. (2, 5)
B. (8, 9)
C. all points on the line y = 
x + 
; dependent system
D. empty set; inconsistent system
Mathematics
Find the indicated partial sum for the sequence.37, 87, 137, . . . ; S10
A. -1880 B. -2435 C. 2620 D. 2435
Mathematics
Simplify the complex fraction.3 + 
A. - 
B. 
C. 
D. 
Mathematics
Solve.-5x = -25
A. 20 B. 5 C. -20 D. 2
Mathematics