Question

3. The measures 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

my answer was 30

Answer 2

its an equilateral triangle right?

so all the sides are the same

3x+15=7x-5

Answer 3

was i wrong ?

Answer 4

first off did you know how i got this ?

Answer 5

what u wrote right now?

Answer 6

yup

Answer 7

Yup yup

Answer 8

can u just give me the answer i did all of the work i just want to know so i can go back and do my work over again

Answer 9

okies

can you solve that

Answer 10

ok 5

Answer 11

dang it i knew i had it right but i thought i was missing numbers so i kept doing it different ways

Answer 12

but thanks for your help

Answer 13

just remember the properties of the triangles

Answer 14

probably its good to write it down as notes or something :P

Answer 15

on the other question with the triangle was it 12 or 14 because those were the only options that i thought were right.

Answer 16

for what number?

Answer 17

#2

Answer 18

ah
you just work it out the same way its just algebra

it was just a careless mistake ( i make them alot more than you do)

Answer 19

but you know how to do the math right?

Answer 20

yeah i got 12?

Answer 21

okies just as long as you know how it works

there will be mistakes (no such thing as perfection)

just try to be more careful

Answer 22

ok but what did you get and how i plugged the number into X

Answer 23

okies

(-28) +5x= 3x+28 +(-28 ) additive inverse

(-5x) +(-28) + 5x = 3x + (- 5x) additive inverse

-28 =3x+(-5x) simplify

-1/2 [-28 = -2x ] multiply by reciprocal

14 = x

Answer 24

3 side of triangle = 180 in

3x + 15= 7x-5

x= 5,

if x= 5, that makes two of them equal@ 30 in

180-30-30= 120 in for the last side?

Answer 25

its a given isosceles triangle no calculation is needed

Answer 26

just calculation of the angles

Answer 27

ok so i had the right answer like i told you but did to different procedures >.<`

Answer 28

two*

Answer 29

but did you understand why i did what i did?

Answer 30

whats the answer...

Answer 31

answer is 14

Answer 32

hey i turned it in and on #3 i was right it was 30 but i put in 5 so i got that one wrong :( all the other ones were right tho :)

Answer 33

....

Answer 34

thanks for your help now i have to do another assignment hopefully its a little less difficult

Answer 35

i dont really know how it could be 30

Answer 36

umm but sorry though :(

Answer 37

can you ask your teacher about that question?

Answer 38

i object to that answer

properties of equilateral triangles
given that
all angles congruent
all sides congruent

3x+15=7x-15

unless my computation was incorrect ( a careless mistake)
the answer should be correct as 5

Answer 39

lol thanks guys

Answer 40

The correct answer was 30. haha I chose 5 -.- wish I would've gone with 30 >:(
1.c
2.A
3.D
4.A
5.B
:)

Answer 41

@sageyy was right! Thank you so much <3