<p>Hey guys I'm not sure how to do the following question: </p>
<p>x and y are positive integers such that the greatest common factor of x^2y^2 and xy^3 is 45 then what of the following could y equal: </p>
<p>a) 45
b) 15
c) 9
d) 5
e) 3</p>
<p>How do you solve it?</p>
<p>45 breaks up into 5 x 9…which is the same as 5 x (3)^2 ; following the format </p>
<p>5 ^2 x 3^2 and 5 x (3)^3 = 45.</p>
<p>Thanks! That makes sense.</p>
<p>The explanation is in the book btw. :)</p>
<p>I thought that would be the case Xombie but I merely photocopied the questions from my school’s library and not the answers.</p>
<p>i’m gonna use this thread since i’m too lazy to start a new one, lol</p>
<p>ok, so the question is #50 on the red book (second test). it’s a geo problem so i can’t diagram it. basically, i don’t understand why H is not the right answer since ABC can be only similar to FCE right?</p>
<p>H is talking about the ANGLE not the triangle. </p>
<p>Is the answer G?</p>
<p>ARGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGg, i hate these stupid mistakes of mine.</p>
<p>the answer is actually K since DE is at a 90 degree angle with BE</p>
<p>I still dont understand the solution for the first problem…anyone want to explain it better??? In the explanation he uses 3 instead of 9 as y…why??</p>
<p>what is the answer??? E</p>