645/560=1.151785714
Ther perccent error in her estimate is 15%
Answer:
0, 1, 3, 6, 10, 15, 21, 28, 36, 45
There will be 9 trips the ferry makes and on the last trip there will be 5 cars on the ferry.
Well the y-intercept is where a line crosses the y-axis
y=-4x-6
think of it as y=mx+b
m is always going to be your slope
b is always going to be your y-intercept
y-intercept of y=-4x-6
is -6
In order to solve the amount of each solution, we need to set up equations. We do as follows:
Let x = solution with 32% sodium
y = solution with 12% sodium
Overall balance
x + y = 50
Component balance
.32x + .12y = 50(.20) =10
Solving simultaneously,
x = 20
y = 30
Hope this answers the question. Have a nice day.
