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

The answer is B

Answer 2

128 + 150 = 278, So, your ganna take 450 and subtract 278 to get 172 which is x.

Answer 3

perimeter of a triangle is : P = A + B + C

450 = 128 + 150 + x
450 = 278 + x
450 - 278 = x
172 = x

yep..I agree....answer is B

Answer 4

cool thanks

Answer 5

Your welcome :)

Answer 6

lol did u block me?