Verify that the values of the variables listed are solutions of the system of equations.
x = 5, y = -1
A. solution
B. not a solution
Answer: A
Mathematics
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The set of __________ numbers is {1, 2, 3, 4, ... }.
A. irrational B. integer C. natural D. whole E. negative
Mathematics
A license plate consists of any five capital letters from the ordinary English alphabet (A through Z) except for the letters O, I, and Q.How many of the license plates have no repeated letters?
A. 23 × 5
B. 
C. 
D. 235
E. none of these
Mathematics
Find the real solutions of the equation.
= x
A. {-2, 10}
B. no real solution
C. 
D. {10}
Mathematics
Solve the equation.-7z = 56
A. -8 B. 8 C. 63 D. -63
Mathematics