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3 years ago

7) 19 = 9 + 2(x – 7)

Mathematics

2 answers:

sdas [7]3 years ago

4 0

Answer:

i think the answer is 7 - x = 8

Step-by-step explanation:

Let me explain why i think that is the answer. First off, i turned the problem around so it was easier for me to solve.

I think that it stays '7 - x' because they arent like terms so you cant combine them, so i think that stays the same. Because i cant change that, i added '2 + 9' and i got 11. I then took the 11 and subtracted it by itself and the 19. Because i subtracted it by itself, the 11 canceled out and i got 8 from the 19 - 11. Like i said, i couldnt do anything with the ' 7 - x' i ended up with 7 - x = 8.

Arisa [49]3 years ago

3 0

Answer:

x = 12

Step-by-step explanation:

First you need to use the distributive property.

19 = 9 + 2x - 14

Then you should simplify (9-14)

19 = 2x - 5

+5 +5 (Then add 5 to both sides)

24 = 2x

/2 /2 (Divide by 2 to get x by itself)

12 = x

Hope this helps!!!

-Unicorns110504

*Please mark brainliest*

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Answer:

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Step-by-step explanation:

Since we know that line CD is a perpendicular bisector, triangle ACD is a right triangle, and thus we can apply the Pythagorean theorem to determine the length of side CD. Since the Pythagorean theorem states that a^2 + b^2 = c^2, where c is the hypotenuse and a and b are the adjacent sides, we can plug in the values of side AD and AC.

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