Question

AC=3x and BC=5x. If the perimeter of triangle ABC is 84, then x=

Answer 1

(a)=21
(b)=36
(c)=39
(d)=41
(e)=45

Answer 2

The hypotenuse and one leg are given. The missing leg is needed for the perimeter.

If you know the Pythagorean triples, then you know that 3, 4, 5 is a Pythagorean triple as 3x, 4x, and 5x would be.

Answer 3

3x + 4x + 5x = 84
Solve for x. @aristine

Answer 4

oops, wrong problem:
(a) 21/4
(b) 28/3
(c)4
(d)7
(e)12

Answer 5

so it's d?

Answer 6

You could use the Pythagorean theorem to crank out the missing side. I will attach a "blurb" about Pythagorean triples in case you want to know more about them.

Answer 7

>so it's d?
I don't know. What did x turn out to be?

Answer 8

7

Answer 9

Then, d is the correct option.

Answer 10

thanks!