Answer:
x=2 y=-1
Step-by-step explanation:
multiply the top equation by negative 2. then it is -7=-14
then you dive and find out that x=2 and plug it inot the equation and solve for x 10+?=9 which is -1
Answer:
you cant divide by 0, it'd be undefined if that helps
Step-by-step explanation:
Answer:
see explanation
Step-by-step explanation:
To complete the square
add ( half the coefficient of the x- term )² to x² - 2x
x² + 2(- 1)x + 1
(x² - 2x + 1 = (x - 1)²
Answer:
18 nickels, 9 dimes, and 6 quarters.
Step-by-step explanation: