Asked by plshelp
2(3x−6)>=5(0)−10
Select all the values of x that will make the following inequality true.
x = -5
x = 1
x = 0
x = 2
x = 13
x = 7
I keep getting this wrong what are the true ones
Select all the values of x that will make the following inequality true.
x = -5
x = 1
x = 0
x = 2
x = 13
x = 7
I keep getting this wrong what are the true ones
Answers
Answered by
Steve
you ask us to show our work in solving the problem. Why not show your work and how it went wrong?
I suspect a typo, since
5(0) - 10 = -5
That makes your equation
2(3x-6) = -5
So, does -5 work?
2(3(-5)-6) = 2(-15-6) = 2(-21) = -42
Nope.
Now you try the others to see whether any of them end up as -5. Or, if there is a typo, fix it and then try the values. Show your work, and we can help you understand what went wrong.
I suspect a typo, since
5(0) - 10 = -5
That makes your equation
2(3x-6) = -5
So, does -5 work?
2(3(-5)-6) = 2(-15-6) = 2(-21) = -42
Nope.
Now you try the others to see whether any of them end up as -5. Or, if there is a typo, fix it and then try the values. Show your work, and we can help you understand what went wrong.
Answered by
plshelp
2(3x−6)>=5x-10 made a mistake
Answered by
Steve
solve as you would an equation. The only thing to watch for is to change the direction of the inequality when multiplying by a negative quantity.
2(3x−6)>=5x-10
6x - 12 >= 5x-10
6x-5x >= -10+12
x >= 2
So, pick out all the values at least 2. To be sure, substitute them into the original, and make sure they work.
For example, if you use 5,
2(3*5−6)>=5*5-10
2(15-6) >= 25-10
2(9) >= 15
18 >= 15
so that works.
2(3x−6)>=5x-10
6x - 12 >= 5x-10
6x-5x >= -10+12
x >= 2
So, pick out all the values at least 2. To be sure, substitute them into the original, and make sure they work.
For example, if you use 5,
2(3*5−6)>=5*5-10
2(15-6) >= 25-10
2(9) >= 15
18 >= 15
so that works.
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