Slope intercept is y=Mx+b where m is always the slope and b is always your y intercept. The point slope fo is y-y^1=m(x-x^1) where x1 and y1 are a known point and m is the still the slope. X and y is another point on the linear equation
1/10
Step-by-step explanation:
9/2 is 4.5 so,
9/2 × 1/15= the answer
9/30=1/10
Answer:
15
Step-by-step explanation:
substitute the value of the variable into the equation and simply
Answer:
X = 4
Step-by-step explanation:
Add x to both sides
6x = 24
Divide by 6 in both sides
x = 4
Answer:
2.5 gal would have to be replaced with 100% bleach to get the right concentration.
Step-by-step explanation:
If we drain X gal from the tank and we replace it with X gal of 100% bleach we will have in the tank: 80-X gal of 4% bleach and X gal of 100% bleach.
We can calculate the final concentration of the solution using a weighted average of the volumens where the weights are going to be the concentrations of each one:
(7%)×(80) = (4%)×(80-X) + (100%)×(X)
560 = 320-4X+100X
240 = 96X
X=2.5 gal
