226,996 views
21 votes
21 votes
Find the value of the variable dc=12gc=9fg=18×=?

User Benissimo
by
2.9k points

1 Answer

9 votes
9 votes

dc = 12

gc = 9

Then is valid proportion

DC• EC = FC • GC

Now find X = ED

ED = EC - DC

Then find

DC • EC =( 18+9) • 9

EC = 27•9/12 = 20.25

Now

X = ED = 20.25 - 12 = 8.25

Then answer is

X= 8.25

User Ruthafjord
by
2.8k points