To clarify the systems of equations:


We already have opposite coefficients for y, so combine the two equations together:

Divide both sides by 5 to get x by itself:

Because we now know x, we can plug it into one of the equations.
We will plug this value into the first equation:


Add 24 to both sides.

Divide both sides by -1 to get y by itself.

Using elimination,
x = 2 and y = -30.
The correct answer for the question shown above is: Gabriel should use 2 kilograms of compost.
The explanation is shown below:
1. To solve the exercise you must apply the following proccedure:
2. You have that He
wants it to be 2 parts compost to 10 parts potting soil and he
wants to end up with 10 grams of mix. Therefore:
=(2/12)x12 kilograms
=0.166x12 kilograms
=2 kilograms
Answer:
18 nickels, 9 dimes, 6 quarters.
Step-by-step explanation:
Basically, I just made a money table and used it to get my equation, which is: 60x-30=330, to get how many quarters there are. Then, plug that in to the problem and you have your answer.
Answer:
x = -16
Step-by-step explanation:
53 = -11 -4x
+11 +11
64 = -4x
/-4 /-4
-16 = x
Answer:
75 mph
Step-by-step explanation:
To find the rate of speed you have to divide 112.5 by 1.5 and the answer its 75 miles per hour.