A few days ago
indo girl

anyone can help me to solve this inequalities?

Twp pf the sides of a triangles are 12cm and 7cm. Third side is the length of x, and x is an integer. What’s the inequality that must be satisfied by x?

Top 1 Answers
A few days ago
pseudonym

Favorite Answer

For this you need to use the triangle inequality, which goes like this:

if a, b, and c are the sides of a triangle (when b>c and a is unknown), then

(b-c) < a < (b+c) so now we just substitute for a, b, and c. Since b has to be more than c, than b must be 12. That means that c must be 7. Since a is unknown, it is equal to x. So you end up with: (12-7) < x < (12+7) 5 < x < 19 And there's the answer! Hope I helped. Feel free to email me if you have any questions.

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