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Inessa [10]
3 years ago
9

If DE= 4x–1, EF= 9, and DF= 9x–22 , find the value of x

Mathematics
1 answer:
dybincka [34]3 years ago
6 0

Answer:

The correct answer is x = 6.

Step-by-step explanation:

To solve this problem, we first must recognize that DE + EF = DF.

From this information, we can set up the following equation when we substitute in the given values:

DE + EF = DF

(4x-1) + 9 = 9x - 22

Our first step is going to be to combine like terms on the left side of the equation.  This is modeled below:

4x - 1 + 9 = 9x - 22

4x + 8 = 9x - 22

Then, we should subtract 4x from both sides of the equation.

8 = 5x - 22

Now, we can add 22 to both sides of the equation.

30 = 5x

Finally, we can divide both sides by 5.

x = 6

Therefore, the correct answer is x = 6.

Hope this helps!

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4 0
3 years ago
What is the solution to the equation 1/4x = 5?
puteri [66]
The solution to your equation is:

Solve:
1/4x = 5

Step 1: Multiply both sides by 4
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x = 20


Thus your answer is:

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Hope that helps!!!



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Step-by-step explanation:

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8 0
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Answer:

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Step-by-step explanation:

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