Question

the measure of two of the sides of an equilateral triangle are 3x+15 in. and 7x-5 in. What is the measure of the third side in inches?

Answer 1

3x+15=7x-5
3x-7x=-5-15
-4x=-20
4x=20
x=4*20 (haha)
x=80

Answer 2

Welcome to open study and @zactowbes please do not just give the answer help them through it

Answer 3

Thank u @decarr432 but I got 30 and still don't understand how ^^ @zactowbes got there answer

Answer 4

and this is geometry . just adding that

Answer 5

Thats okay as long as its math you can post it in this subject

Answer 6

k. but I still need help solving this

Answer 7

I suck at this I am sorry but I know some one who may be able to help @mathmale

Answer 8

@zactowbes so what you have wrote above is wrong
than 4x=20 so x not is equal 80

how you get it ?

Answer 9

@Decarr432 can you solve it for medal ?

Answer 10

Not likely sir I apologize but geometry is my worst subject but I can try

Answer 11

Wouldn't x have to be equal to 5 because 3(5)+15=30 and 7(5)-5=30

Answer 12

@jhonyy9

Answer 13

@Decarr432 first of all what mean exactly ,,equilateral triangle" ?

Answer 14

A triangle in which all three sides are equal right?

Answer 15

yes - so than you know that a side has length of 3x+15 and the second 7x-5 so can you calculi x from these two ?

Answer 16

X is 5 3(5)+15=30 and 7(5)-5=30

Answer 17

so than what will be the length of 3rd side ?

Answer 18

30

Answer 19

exactly - nice work -

Answer 20

Thank you!

Answer 21

np

was my pleasure

good luck

bye

Answer 22

@Tay0913 Did you see how I got that?

Answer 23

Yes. Thank u

Answer 24

Both of u guys @decarr432 & @jhonyy9

Answer 25

If you need help just tag me I'll do my best make sure to close this btw! :D

Answer 26

Ok

Answer 27

Both of u guys @decarr432 & @jhonyy9