2 years ago

HelPppPpPpPpPP PleasEEeEeee ASAP

Mathematics

2 answers:

algol132 years ago

6 0

Answer:

Step-by-step explanation:

AB is equal to AC

so x + 7 = 2x - 1

then simplify

7 = x - 1

x = 8

plug it back into AB

8 + 7 = 15

so AB is 15

Ganezh [65]2 years ago

3 0

Answer:

Step-by-step explanation:

AB=AC

x + 7 = 2x - 1

8 = x

now you plug in 8 for x in the equation for line AB

(8) + 7 = 15

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