What is the answer for this two step equation, 11=5x-2
1 answer:
Hey there!
For questions like these, we want to isolate the x on one side of the equation and have everything else on the other side.
Let's add both sides by 2 to eliminate the "-2"
Now, let's divide both sides by 5 to eliminate the "5" in front of the x.
That's your answer.
Have an awesome day! :)
~AgentCozmo4, Junior Moderator
For questions like these, we want to isolate the x on one side of the equation and have everything else on the other side.
Let's add both sides by 2 to eliminate the "-2"
Now, let's divide both sides by 5 to eliminate the "5" in front of the x.
That's your answer.
Have an awesome day! :)
~AgentCozmo4, Junior Moderator
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Answer:
option D
Step-by-step explanation:
Jerry solved this equation:
In the first step , she multiplied 3 inside the parenthesis
1.
In step 2, 3/4 is added on both sides
2.
In step 3, we take LCD 12
3.
In step 4, add the fractions
4.
Here, 3 or 3/1 are same.
In step 5, to remove 3/1 we multiply both sides by 1/3.
Instead of multiplying 1/3 , Jerry made an error by multiplying 3/1
In step 5, he should have multiplied both sides by 1/3
Write the vertex form of the equation and find the necessary coefficient to make it work.
.. y = a*(x +3)^2 -2
.. = ax^2 +6ax +9a -2
You require the y-intercept to be 7. So, for x=0, you have
.. 9a -2 = 7
.. 9a = 9
.. a = 1
The equation you seek is
.. y = x^2 +6x +7
.. y = a*(x +3)^2 -2
.. = ax^2 +6ax +9a -2
You require the y-intercept to be 7. So, for x=0, you have
.. 9a -2 = 7
.. 9a = 9
.. a = 1
The equation you seek is
.. y = x^2 +6x +7