Answer:
x = 2
Step-by-step explanation:
Both equations are equal to y, so they're also equal to each other. We then set them equal to each other:
x^2 - 2x + 1 = x^2 + 2x - 7
We now do algebra to isolate x. Subtract 1 from both sides.
x^2 - 2x = x^2 + 2x - 8
Subtract 2x from both sides.
x^2 - 4x = x^2 - 8
Subtract x^2 from both sides.
-4x = -8
Divide both sides by -4.
x = 2
The difference of the helicopter and the submarine being 18.5 meters makes 18.5+-7.75=10.75
Answer:
0.132
Step-by-step explanation:
if 1kg of chees cost 6.60 100g cost 0.0660 So if 0.0660 multiplied by 2
= 0.132
Answer: y = 2x+8
Check out this graph I supplied you with!
