Find the sum using the formulas for the sums of powers of integers.
?
?
A. -784
B. -3,136
C. 4,200
D. 5,600
E. -6,132
Answer: E
Mathematics
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Solve by the substitution method.
x + 
y = -3 x - y = -3
A. {(-6, -3)} B. {(-7, -2)} C. ? D. {(6, -2)}
Mathematics
Convert.7
gal to quarts
A. 31 qt B. 14 qt C. 28 qt D. 62 qt
Mathematics
Simplify.|-11| - |-14|
A. -25 B. 25 C. 3 D. -3
Mathematics
Find the solutions to the system of equations by the addition method. 7x + 9y = -45 2x + 3y = -15
A. (0, -5) B. (-1, -4) C. (-1, -5) D. (0, -4)
Mathematics