-Logic question- Can someone help me with the math question?
Find the mistakes in the proof for the statement ”The sum of any two rational numbersis a rational number”.
Proof. Let rational numbers r=1/4 and s=1/2 be given. Then r+s=1/4+1/2=3/4. This is what was to be shown.

Someone . me. compound probability

1. are the triangles similar and if so why? what is the value of x? show your work.

The length of a rectangle is x times the square root of 100. the width is one-half y more than three-halves x. given that the area of the rectangle is 125 cm2, which equation could represent the rectangle in terms of x and y? a) 5xy − 15x = 125 b) 5xy + 15x = 125 c) 15x2 − 5xy = 125 d) 15x2 + 5xy = 125