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EleoNora [17]
3 years ago
7

Help .................................................

Mathematics
2 answers:
kati45 [8]3 years ago
5 0
AC-AB=BC
53-4x-6=2x+5
42=6x
x=7
BC=2x+5=2(7)+5=19
Ksenya-84 [330]3 years ago
4 0
The correct answer is 19 because x=7
Hope this helped :)
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Using the equation y = 2x – 3, what would the input need to be for an output of 7?
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Answer:

5

Step-by-step explanation:

We have an equation and are asked to find the input of x when y = 7.

The output = y = 7

The input = x

7 = 2x - 3

2x - 3 = 7

We need to find a number that multiplied by 2 which then is subtracted by 3 equals 7. We can use the backwards method  to solve our answer.

2x - 3 = 7

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Solve for x by dividing 2 from both sides :

x = 5.

Therefore, you would need an input of 5 to get 7 as the output.

Proof :

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I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
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