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earnstyle [38]
4 years ago
9

J is between H and K. If HJ = 2x + 5, JK = 3x - 7, and KH = 18, find the value of x

Mathematics
1 answer:
irina1246 [14]4 years ago
4 0

We know that HJ + JK = HK

So lets substitute each part for their equation.

(2x + 5) + (3x - 7) = 18

Combine like terms

5x -2 = 18

Add 2 to both sides to eliminate it

5x = 20

Divide both sides by 5

x = 4

Let me know if you have any questions about this! :)

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Step-by-step explanation:

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Answer:

The answer is D.

Step-by-step explanation:

We have to apply Discriminant Law. When a quadratic equation, ax² + bx + c = 0 has equal roots so the discriminant will be 0. Then, you have to substitute the values into the formula :

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4 years ago
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BabaBlast [244]

Answer:

5

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