We have a system of equations 2x - 4y = 5 and 6x - 3y = 10.
We want to eliminate one variable when we add up the equations.
If we want to eliminate the x variable, we need to multiply the top, bottom or both of the equations with a number that when the equations are added together will eliminate the x variable.
Multiply the top equation by -3.
-3(2x - 4y) = 5 * -3
-6x + 12y = -15
Now when we add the two equations together, the x's will be eliminated.
-6x + 12y = -15
6x + 6y = 10
18y = -5
The x's were eliminated.
Answer:
-3.7
Step-by-step explanation:
1. More = Addition
2. 0.65 + -4.35 = -3.7
Answer:
the question is not clear
Answer:
Step-by-step explanation:1 over 4 and divide 6.2 divided by the one and the 1 and 4
Answer:
Tomas
Step-by-step explanation:
Let's use miles per hour
Maren:<em> 60 miles/hour</em> (It's given to us)
Safiya: 120 miles/3 hours
Let's divide both by three to get to miles/hour.
120/3=40
<em>40 miles/hour</em>
Tomas: 84 miles/1.2 hours
Let's divide both by 1.2 to get to miles/hour
84/1.2=70
<em>70 miles/hour</em>
Cam: 75 miles/1.5 hours
Let's divide both by 1.5 to get to miles/hour
75/1.5=50
<em>50 miles/hour</em>
After comparing all the speeds we can conclude that Tomas drove the fastest.
