30 pints of first type and 130 pints of second type drinks must be used to make the mixture.
<em><u>Explanation</u></em>
Lets assume, the amount of first type drink is pints.
As the total amount of the mixture is 160 pints, so the amount of second type drink pints.
The first type is 20% pure juice, the second type is 100% pure fruit juice and the mixture is 85% pure fruit juice. So the equation will be .....
So, the amount of first type drink is 30 pints and the amount of second type drink is (160-30)pints =130 pints.
Multiply the equation 2x+7y=-1 by -2
add to othe equaiton
4x-3y=-19
<u>-4x-14y=2 +</u>
0x-17y=-17
-17y=-17
divide both sides by -17
y=1
sub back
2x+7y=-1
2x+7(1)=-1
2x+7=-1
minus 7 from both sides
2x=-8
divide both sides by 2
x=-4
x=-4
y=1
(x,y) is normal form
(-4,1) is answer
Answer:
The independent variable is " mileage driven."
The dependent variable is " amount of gasoline remaining in the tank"
Step-by-step explanation:
Given: The amount of gasoline remaining in the tank decreases with mileage driven.
When we drive the distance, the amount in the tank decreases.
Therefore, the amount of gasoline depends on the mileage driven.
Here the independent variable is " mileage driven."
The dependent variable is " amount of gasoline remaining in the tank"
Hope this will help you to understand the concept.
Thank you.