<p>Yea I have a feeling I got that wrong. Been a while since I had geometry and forgot that you have to square the sides.</p>
<p>I just did a test problem right now used a 3,4,5 triangle and a similar 9,12,15 triangle. </p>
<p>Area of 3,4,5 = 6</p>
<p>Area of 9,12,15 = 54</p>
<p>According to everyone who did 40/3, when you do 6/54 = 3/x. You should get 9 (the corresponding similar side). But you only get 9 if you do 6/54 = 3^2 / x^2</p>
<p>There were… So and so kids in both classes. You had to subtract by 14 from each because 14 kids were in both. Add those together (76) and then add the 14 kids you took out.</p>
<p>master if 14 are in both, that means you subtract 14 because you know 14 of the total are already included in that count and that would be adding them twice</p>
<p>I didn’t mean the one with the line where f(x)<3. It was the one where it said there is a number line with a and a+10 and x is in between a and a+10.</p>