Y has already been solved for.
This equation is written in slope-intercept form. (y = mx + b)
In this case m = 2 and b = -3
Slope = 2
Y-intercept = -3
Hope This Helped! Good Luck!
A) Variable = x ( miles Tim walked )
B) Tim walked X miles, Molly walked 4+x miles ( 4 more than Tim)
Equation: x + x+4 = 10
C) x +x+4 = 10
2x+4 = 10
2x =6
x = 3
D)
Tim walked 3 miles, Molly walked 7 miles
Answer : I think the word that indicates that negative should be used is “descend” since he took a break 4 times and each time he descend 15 meter if we look at the equation 4(-15)=-60
Where 4 is the amount of time he took a break and (-15) is the distance he descend.
The value of x in the equation is - 3.
<h3>How to find the variable in an equation?</h3>
Variables are number represented by a letter in an equation.
Therefore,
-5x - 9 = 2x + 12
subtract 12 from both sides of the equation
-5x - 9 = 2x + 12
-5x - 9 - 12 = 2x + 12 - 12
-5x - 21 = 2x
add 21 to both sides of the equation
-5x - 21 = 2x
-5x - 21 + 21 = 2x + 21
-5x = 2x + 21
subtract 2x from both sides
-5x = 2x + 21
-5x - 2x = 2x -2x + 21
-7x = 21
divide both sides by -7
-7x / -7 = 21 / - 7
x = -3
learn more on equation here: brainly.com/question/7421811
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Lets set up some variables:
- 1st envelope:
- 2nd envelope:
- 3rd envelope:
Now let us set up some equations based of the facts:
Now we could try some numbers out since there isn't really any other way I could solve this so far...
but we do know that the sum of and must be even since they equal
After you tried it out for a little bit, when = 2, then = 8, and . These three values meet the criteria and we have our answer.
Hope that helped!