Solve by the substitution method.x + 7y = 608x + 6y = 30
A. (-4, 10)
B. (-3, 9)
C. (3, 10)
D. (60, 30)
Answer: B
Mathematics
You might also like to view...
Find a quadratic equation whose solution set is given.{-2, 2}
A. x2 - 4x + 4 = 0 B. x2 + 4x + 4 = 0 C. x2 - 2 = 0 D. x2 - 4 = 0
Mathematics
Rationalize the denominator and simplify. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. 
Mathematics
Find a general term an for the arithmetic sequence.a4 = 50, a18 = -20
A. an = -5n + 65 B. an = -4n + 70 C. an = 5n + 72 D. an = -5n + 70
Mathematics
Use substitution to determine whether the system of linear equations has no solutions, one solution, or infinitely many solutions.x + y = 5x + y = 8
A. Infinitely many B. One C. No solutions
Mathematics