Answer:
Solve for the first variable in one of the equations, then substitute the result into the other equation.
x = 5 x = 4
Step-by-step explanation:
Answer: See below
Step-by-step explanation:
Same steps as the last question I answered
5) a ➤ x=-3
b ➤ y=7
6) x=-1
7) y=-4
Answer:
true
Step-by-step explanation:
rjdkejdkdkekewnensjwkw
Answer:
-9
Step-by-step explanation:
2(-x)² - 5 = 157
2x² - 5 = 157
add 5 to each side of the equation:
2x² = 162
divide both sides by 2:
x² = 81
√81 = 9 or -9