Question

Triangle ABC is congruent to triangle DEF. In triangle ABC, side AB measures 4, side BC measures x+8, and side CA measures 8. In triangle DEF, side DE measures 4, side EF measures 3x+3, and side FD measures 8. What equation would help you to solve for the side length of BC and EF? Explain your reasoning using complete sentences.

Answer 1

@ganeshie8

Answer 2

@wolf1728 plz help

Answer 3

side BC is congruent to side EF
so
x + 8 = 3x + 3

Answer 4

solve this equation for x
then you you can calculate the length of the sides BC and EF

Answer 5

@welshfella can u help me??

Answer 6

@welshfella I got 5/2 is that correct

Answer 7

x + 8 = 3x + 3
subtract x from both sides
8 = 2x + 3
add 3 to both sides
11 = 2x
divide both sides by 2
x = 5.5

Answer 8

oops i made an error..
8 = 2x + 3
subtract 3 from both sides
5 = 2x
x = 2.5

Answer 9

or 5/2

thats the value of x

now you have to plug this into x + 8 to find the length of BC and EF.

Answer 10

BC = 2.5 + 8

Answer 11

ok?

Answer 12

ok thank you very much (: