Question

math problem
screenshot down below

Answer 1

the triangles are the same right? just their size if different?

Answer 2

yes

Answer 3

then, we can use the rule of three

Answer 4

dont now the rule of three

Answer 5

[\[12 ---> 3\]

[\[20 ---> x\]

Answer 6

divide by 4?

Answer 7

ehmm, no.

Answer 8

oh

Answer 9

\[12 \times x = 20 \times 3\]

Answer 10

divide both sides by 12 firstly

Answer 11

ok

Answer 12

you winning right -- so we get \[x = (20 \times 3) / 12\]

Answer 13

60

Answer 14

60/12=x

Answer 15

5

Answer 16

good!

Answer 17

ok thank you

Answer 18

All we need to do is scale down, we know taht side b goes down by a divicson of 3......so we need to scale down all sides by doing that

Answer 19

or with other name : use the proportionality of corresponding sides and write in this way

\[\frac{ 12 }{ 3 } = \frac{ 20 }{ x } \]

cross multiplie and calcule the x value