Register
If DE = 4x + 10, EF = 2x-1, and DF = 9x-15, find DF
48.6k views
1 vote
If DE = 4x + 10, EF = 2x-1, and DF = 9x-15, find DF

If DE = 4x + 10, EF = 2x-1, and DF = 9x-15, find DF-example-1
User Zimmryan
by
7.2k points

1 Answer

3 votes
Hello,
We have that:
(4x+10)+(2x-1)=9x-15

We solve the equation:
4x+10+2x-1=9x-15;
6x+9=9x-15;
6x-9x=-15-9;
-3x=-24;
3x=24;

from which
x=24:3=8

Then:
DF=9x-15=(9×8)-15=72-15=57

bye :-)
User Chris Kessel
by
7.4k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

7.4m questions

9.9m answers

Other Questions

How do you estimate of 4 5/8 X 1/3
Write words to match the expression. 24- ( 6+3)
Please solve the following equation. x-6x=56
whats the most accurate estimation of 65+77
Find the additive inverse of 18/23
Link Copied!