Question

The triangle below has a total perimeter of 450 cm. :

picture of a triangle with sides 128 and 150. Third side unknown

Write an equation and solve it to find the length of the longest side of the triangle.

128x + 150 = 450; x = 2.34 cm
x + 278 = 450; x = 172 cm
2x + 278 = 450; x = 86 cm
150x + 128 = 450; x = 2.15 cm

Answer 1

a.128x + 150 = 450; x = 2.34 cm
b.x + 278 = 450; x = 172 cm
c.2x + 278 = 450; x = 86 cm
d. 150x + 128 = 450; x = 2.15 cm

Answer 2

a+b+c = perimeter

Answer 3

okay?

Answer 4

128+ 150+x = 450
so x = ?

Answer 5

so do the work lol @ugh.math sorry but you cant just give answers

Answer 6

x=172

Answer 7

correct. :)

Answer 8

if I knew how you do the work you really think I would be here?

Answer 9

o what after that? @sangay21

Answer 10

@sangya21 sorry

Answer 11

Its okay. :) just ask. We wont give direct answers out. But we will help you.

Answer 12

so would it be B? x + 278 = 450; x = 172 cm

Answer 13

Yups. :)

Answer 14

Thanks! (^-^)

Answer 15

Anytime :)