5x+3=3x+7
<em></em>-3 = -3
2x+3=7
-3= -3
2x=4
x=2
Answer:
Slope is 2/3
y-intercept is 1
Step-by-step explanation:
Answer:
The speed of the boat in still water is 10 miles / hour
Step-by-step explanation:
The trip there, and the trip back are the same -- 30 miles
Let the rate of the boat = x
Let the rate of the water = y
30 = 2*(x + y)
30 = 6*(x - y)
Divide the top equation by 2
Divide the bottom equation by 6
15 = x + y
<u>5 = x - y </u> Add the equations together.
20 = 2x Divide by 2
20/2 = x
x = 10
Point A=-1.3
Point B= 1.3
These 2 points are reciprocals, which means that their sum is Zero. So basically they are exact opposites.
