Let's solve this system of equations through substitution.
We have these two equations.
-7x-2y=14
6x+6y=18
Now let divide the second equation by 6.
6x+6y=18 ----> x+y=3
Next, let us move y to the right side of the equation.
x+y=3 -------> x=3-y (x equals 3-y)
Because we found out that what x is in terms of y, we can input that in for every instance of x in this equation below.
-7x-2y=14 becomes -7(3-y)-2y=14 (Why? Because x equals 3-y!)
We have a one variable equation now and can solve for y.
-7(3-y)-2y=14
-21+7y-2y=14
5y=35
y=7
Plug in 7 for y in any equation to find x.
x+y=3
x+7=3
x=-4
answer: x=-4, y=7
Answer:
X - 5 = 4
Step-by-step explanation:
lol love u too no homo
200+57+12=962. The finale answer that should be shown is 962.
12(8+t) You do what's in the parenthesis first, then multiply by 12, or in other words multiply 12 by the sum of 8 and t.
Since Karl became sleepy and decided to decrease his driving time by 25%, he drove <u>767.25 hours</u> that day.
<h3>What is driving time?</h3>
Planned driving time is the estimated time that Karl planned to drive between two points or to one's destination.
The Actual driving time is the actual time that it took Karl to drive from one point to his destination.
Driving time can be estimated or calculated by dividing the distance by the speed.
<h3>Data and Calculations:</h3>
The planned driving hours on a certain day = 1,023 hours
Decrease in driving time = 25%
Percentage of hours Karl drove = 75% (100 - 25)
Hours drove that day = 767.25 hours (1,023 x 75%)
Thus, Karl drove <u>767.25 hours</u> that day.
Learn more about driving time at brainly.com/question/4931057
#SPJ1