Question

help? will give metal for right answer

Answer 1

Post your question.

Answer 2

i did

Answer 3

when triangles are similar, their sides are proportional!

can you form an equation,
equating the proportional sides ?

Answer 4

its okay i have enough steel to last me a few months

Answer 5

@ hartnn i have no idea how to do that

Answer 6

solved any similar triangles question before ?

Answer 7

i dont know how to make an equation for it

Answer 8

http://www.math.com/school/subject1/lessons/S1U2L4DP.html

Answer 9

ok,
since ABC ~ DEC

side AB is corresponding to side DE
side AC is corresponding to side DC

can you tell me now, BC is corresponding to which side ?

Answer 10

EC

Answer 11

thats correct!

now sides are proportional means

the ratio of corresponding sides is EQUAL

Answer 12

so, we have
\(\Large \dfrac{AB}{DE } =\dfrac{AC}{DC}=\dfrac{BC}{EC} \)


got this ?

Answer 13

plug in the values of all the sides that you know

like you know AB = 36

so put 36 in place of AB in that equation

Answer 14

36/6=63+x/x+3 ?

Answer 15

yep, thats correct!

36/6=(63+x)/(x+3)

can you try to solve for x from here ?

Answer 16

36/6 = 6

then do cross-multiplication

6(x+3) = 63+x

now it should be east to find x :)
try it

Answer 17

**easy

Answer 18

any luck ?

Answer 19

trying

Answer 20

the x+3 and 63+x is throwing me off a bit

Answer 21

how would i do 36 times x+3?

Answer 22

its 6 times (x+3)
not 36

Answer 23

\(a(b+c) = ab+ac \\ 6(x+3) = 6\times x + 6\times 3 = ... ?\)

Answer 24

-3

Answer 25

how ?

Answer 26

6x +18 = 63+x

6x-x = 63 -18

Answer 27

5x =45

couldn't be any easier...

Answer 28

x=9

Answer 29

thats correct :)

Answer 30

so the answer is 9?

Answer 31

yes!

Answer 32

sorry bout the derpness lol but thanks!

Answer 33

welcome ^_^