quilly

I agree with everything here. 

If the individual making the question needs a direct answer, I'll give them a direct answer ( Which isn't generally helping them, and it is what they want) but if they really need help I'll to do it step by step and do my best to help them. 

LOL, Let it be. XD

I do. Did you understand my pfp? XD

It isn't. I want to know how to type it. I tried using LaTeX, though it doesnt seem to work....

Math isn't my strongest subject, though there are somethings that I enjoy doing in math. 

Goodness, I'm sorry about that.

Hey hey guest, no need to be aggressive. As you can see I'm a noob here. But, you were most likely excessively inept, making it impossible to comprehend that. :) 

Right angle =a^2+b^2=c^2

1) (6/10)^2+(8/10)^2=(1)^2

solve: 9/25+16/25=1

1=1

Yes, this is a right triangle.

2) (7)^2+(7)^2=(13)^2

Solve: 14+14=169

28=169

No, this is not a right triangle 

3) (3/13)^2 + (4/13)^2 = (5/13)^2
9/169 + 16/169 = 25/169
25/169 = 25/169

Yes. It is a right triangle

Answer) 1 and 3

26) 

Cross multiply:

2.4/4.547=v/1.4

2.4*1.4=v*4.547

Now switch sides:

v*4.547=2.4*1.4

Divide 4.547 by both sides. 

4.547v/4.547=3.36/4.547 (4.547v/4.547 Will get crossed out) 

Now, just normally divide 3.36/4.547. 

Answer: 0.7389.....

Since I have demonstrated to you the best practices to find the solution for #26, I'm certain you can do the rest!