Solve by the substitution method. x + y = 76x + 6y = 42
A. {(0, 0)}
B. {(5, 2)}
C. {(x, y)| x + y = 7}
D. ?
Answer: C
Mathematics
You might also like to view...
Solve by any desired method. If there is no real number solution, say so.3x2 - 4x = 7
A. x = 
, x = -1
B. x = 
, x = 0
C. x = 
, x = 1
D. x = 
, x = -1
Mathematics
Evaluate.-40
A. 1 B. -1 C. 0 D. -4
Mathematics
Use synthetic division to find the function value.f(x) = 5x5 - 5x4 + 2x3 - x + 5; find f(2).
A. 103 B. 99 C. 98 D. 108
Mathematics
Write the augmented matrix for the system. 7x + 3y + 8z = 90 4x + 6y + 4z = 42 2x + 6y + 2z = 18
A. 
B. 
C. 
D. 
Mathematics