Answer:
B. (-1, 2) and (4,7)
Step-by-step explanation:
Solve for the first variable in one of the equations, then substitute the result into the other equation.
Answer:
53, 54, 55
Step-by-step explanation:
The average of the three is the middle one. The average is the sum, divided by 3: 162/3 = 54.
The three integers are 53, 54, 55.
Answer:
X=3
Step-by-step explanation:
0.05(4x) + 0.1x = 0.90
0.2x + 0.1x = 0.90
0.3x = 0.90
x = 3
