Question

2 sides of an equilateral triangle have lenghts of 3x+1 and -2x+26. could 21- x or 3x-4 be the lenght of the 3rd side?
a. both 21-x and 3x-4
b. 21-x only
c. neither 21-x nor 3x-4
d. 3x-4 only

Answer 1

hint : in equilateral triangle, all sides are equal

Answer 2

they gave u 2 sides.... set them equal, and solve x first

Answer 3

3x+1+-2x+26??

Answer 4

@ganeshie8

Answer 5

yu need to set them equal, cuz sides are equal

Answer 6

like this :

3x+1 = -2x+26

Answer 7

solve x now

Answer 8

oh okay, 3x+1=-2x+26
+x +x

Answer 9

im sorry im a little slow

Answer 10

x=5

Answer 11

it's :)

Answer 12

3x+1=-2x+26

Answer 13

add 2x both sides

Answer 14

3x+1=-2x+26
+2x +2x

Answer 15

5x + 1 = 26

Answer 16

subtract 1

Answer 17

substitute the value of x, =16 both sides :)

Answer 18

5x+1=-4x+26
-1 -1

Answer 19

yes, keep going

Answer 20

hey no wait

Answer 21

we got this right,

5x + 1 = 26

Answer 22

subtract 1

Answer 23

5x + 1 = 26
-1 -1

5x = 25

Answer 24

-2x+26=3x+1
-2x-3x=1-26
-5x=-25
x=5

then substitute the value of x

Answer 25

side 1
3x+1= 3(5)+1 =16

side 2
-2x+26= -2(5)+26 =-10+26 =16

Answer 26

so its a

Answer 27

@engr04

Answer 28

@ganeshie8

Answer 29

@terenzreignz

Answer 30

read the q once,

could 21- x or 3x-4 be the lenght of the 3rd side?

Answer 31

no?

Answer 32

it's b

Answer 33

you got x = 5

Answer 34

21-x
21-5=16 correct
but, 3x-4
3(5)-4=11 incorrect so it's only 21-x

the answer is b :)