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ABC is an isosceles AB= 3x-4 and BC= 5x-10 what is AB?
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25 votes
25 votes
ABC is an isosceles
AB= 3x-4 and BC= 5x-10

what is AB?

ABC is an isosceles AB= 3x-4 and BC= 5x-10 what is AB?-example-1
User Raj Narayanan
by
2.6k points

2 Answers

11 votes
11 votes
AB = 5
3x-4=5x-10
-3. -3
-4 = 2x -10
+10. +10
6 = 2x (divide by 2 on both sides)
X = 3

AB = 3x-4
3(3)-4 ( substitute for x)
9 - 4
= 5
User Babie
by
3.2k points
12 votes
12 votes
3x-4=5x-10
Subtract 3x from both sides
-4=2x-10
Add 10 to both sides
6= 2x
X= 3
3 times 3-4
AB=5
User Cliffordheath
by
3.1k points
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