419,879 views
13 votes
13 votes
Algebra: Solve for x. Show work to justify your answer.

Algebra: Solve for x. Show work to justify your answer.-example-1
User Washieka
by
2.4k points

2 Answers

24 votes
24 votes

Answer:

x = 7.5

Explanation:

Since the lines are proportional, we would use this equation:


(4)/(5) = (6)/(x)

Now we rearrange the equation:


4x=6(5)


6(5)=30


4x=30

Now divide both sides by 4 to isolate x


(4x)/(4) = (30)/(4)

The 4's will cancel out.


(30)/(4) = 7.5

Therefore,
x=7.5

Hope this helps!

User Dashsa
by
3.2k points
13 votes
13 votes

15. To solve for x, we have proportional sides.

To find x, use the form below:


\begin{gathered} (4)/(5)=(6)/(x) \\ \\ 4x=6*5 \\ \\ 4x=30 \\ \\ (4x)/(4)=(30)/(4) \\ \\ x=7.5 \end{gathered}

ANSWER:

x = 7.5

User Cheery
by
3.0k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.