Y=-2x+0 reason: rise over run as you can see in the graph -2 rise (drop) and -1 run and b=0 y intercept
Answer:
2x + 8x
10x
Step-by-step explanation:
Open the brackets and multiply x inside.
Answer:
3 tickets
Step-by-step explanation:
8x+3 = 9x
x = 3
We have 10 ml of 20% acid to which we need to add "x" milliliters of 100% acid to make 50% acid.
.20 * 10 + 1.00x = .50 * (10 +x)
in which "x" is the volume of the 100% acid to be added.
2 + x = 5 + .5 x
.5x = 3
x = 6 milliliters
Source:
http://www.1728.org/mixture.htm
Scroll down to problem B
15=7x+3-5x
15= 7x-5x + 3
15 = 2x + 3
-3 + 15 = 2x
12=2x
12/2 = 2x/2
6=x
