Question

Two sides of a triangle have lengths 10 and 18. Which inequalities describe the values that possible lengths for the third side? I'll tell you all the possible answers but I need to know how to solve which one

Answer 1

The third side has to be less than the sum of the other two sides.

Answer 2

if a,b and c are the sides of a triangle, then
|a-b|<c<a+b

Answer 3

c<a+b

Answer 4

\[A) 8 \le x \le 28 B) 8 < x < 28 C) 10 < x < 18 D) 10 \le x \le 18\]

Answer 5

all possible answers

Answer 6

B

Answer 7

So I got 18 math mind

Answer 8

say a = 10 and b=28

Answer 9

x has to be less than 10+18 which is 28.
It can not be equal to.
So B is the only answer.

Answer 10

|a-b|<c<a+b
|10-18|<c<10+18
|-8|<c<28
8<c<28

Answer 11

I see now thank you both!

Answer 12

no problem ;)

Answer 13

Yeah! i meant 18