Answer:
<u>The butter for one portion of onion costs $ 0.44</u>
Step-by-step explanation:
Let's recall that 1 pound = 16 ounces, therefore we have:
Cost of one pound of butter = $ 4.13
Cost of sixteen ounces of butter = $ 4.13
How much dose the butter for one portion cost?
We can use Direct Rule of Three for answering this question, as follows:
Ounces Cost
16 4.13
1.7 x
**************************
16x = 4.13 * 1.7
16x = 7.021
x = 7.021/16
x = 0.44 (Rounding to the next cent)
<u>The butter for one portion of onion costs $ 0.44</u>
Answer:
Solving systems of equations with 3 variables is very similar to how we solve systems with two variables. When we had two variables we reduced the system down
to one with only one variable (by substitution or addition). With three variables
we will reduce the system down to one with two variables (usually by addition),
which we can then solve by either addition or substitution.
To reduce from three variables down to two it is very important to keep the work
organized. We will use addition with two equations to eliminate one variable.
This new equation we will call (A). Then we will use a different pair of equations
and use addition to eliminate the same variable. This second new equation we
will call (B). Once we have done this we will have two equations (A) and (B)
with the same two variables that we can solve using either method. This is shown
in the following examples.
Example 1.
3x +2y − z = − 1
− 2x − 2y +3z = 5 We will eliminate y using two different pairs of equations
5x +2y − z = 3
Step-by-step explanation:
I want to say -1. if you first combine like terms the equation would look like 2-2x. then next step i did was divide both sides by negative 2 to get the x by itself. after i did that i got -1 x.
Answer:
.5
Step-by-step explanation:
