Answer :
Answer:
Step-by-step explanation:
Given that
AB=4x+9
BC=5x+2
Then, AC=56
From vector
AC=AB+BC
Then,
56=4x+9+5x+2
56=9x+11
Subtract 11 from both sides
56-11=9x+11-11
45=9x
Divide both sides by 9
45/9=9x/9
5=x
Then, x=5
Now,
1. AB=4x+9, x=5
AB=4(5)+9
AB=20+9
AB=29
2. Also
BC=5x+2
BC=5(5)+2
BC=25+2
BC=27