Find the solution to the system of equations by the substitution method. 4x + y = 0-4x + y = -8
A. (1, -4)
B. (-1, -4)
C. (1, 8)
D. (-1, 4)
Answer: A
Mathematics
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Graph the equation.
+ 
= 1
A. 
B. 
C. 
D. 
Mathematics
The number of sales calls made by certain employees during a special time span are given. 141, 137, 136, 135, 134, 132, 131, 130, 130, 130, 126, 125, 125, 124, 124, 122, 122, 121, 121, 119.Find the inner-quartile range for the set of sales calls.
A. 10 B. 6 C. 22 D. 11
Mathematics
Perform the indicated operation.11 tons 500 lb ÷ 5
A. 3 tons 100 lb B. 2 tons 500 lb C. 2 tons 100 lb D. 2 tons 101 lb
Mathematics
Find the real part of the complex number, the imaginary part of the complex number, and write the number's conjugate.
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Mathematics