Answer:
x = 3 & x =- 2
Step-by-step explanation:
|4x - 2| = 10
separate this into 2 equations a positive and a negative
4x-2 =10 and 4x-2 = -10
add 2 to each side
4x-2+2 =10+2 4x-2 +2 = -10 +2
4x =12 4x = -8
divide by 4
4x/4 = 12/4 4x/4 = -8/4
x =3 x=-2
90 - 53.45 = 36.55
36.55 / 7.31 = 5 pounds of coffee
Answer:
Sample 2.
Step-by-step explanation: Trust
Answer:
x=0, y=-2
Step-by-step explanation:
Because 9y appears twice in both equations, you can subtract the equations to eliminate the y variable so you can solve for x:
-7x + 9y = -18
-(4x + 9y = -18)
__________
-11x = 0
x = 0
Since we know x=0, then we plug it back into one of the equations to get the value of y:
-7x + 9y = -18
-7(0) + 9y = -18
0 + 9y = -18
9y = -18
y = -2
Therefore, x=0, and y=-2
