June 1 2013 Math Thread

<p>How come some of you have questions that I never encountered on the test???</p>

<p>bc ur not from the US</p>

<p>The sphere inside the cylinder was 2/3. Just multiply the volume of the cylinder to 2/3 and you get the volume of the sphere!!</p>

<p>I live in Los Angeles. Don’t tell me its not part of the US</p>

<p>Also does anyone know how to do the problem with the functions where it has the graph of f(x), g(x), and h(x). I was so confused!</p>

<p>i just graphed them and calculated the value for 5 on both f(x) nd h(x) which was 25 and 28 and u just choosw a number in btw. so i chose 26</p>

<p>What was the one where the two circles shared the same so center with radii of five and thirteen, with a tangent line on the small circle that has endpoints on the larger</p>

<p>^^ For the above I wrote 12 but I have learned the question was experimental anyway but did you gets get 12?</p>

<p>^ It’s 50 for the shaded region question and 3 for the triangle one</p>

<p>FYI-from previous SAT tests i ordered the Q and A for, the curve for math is approximately 770 for -1 and 750 for -2. </p>

<p>Also, doe anyone remember the question for the last question on the 20 min section with the 2 triangles? People are sayin the answer is 17, but I don’t remember putting a 17 and I can’t remember the question.</p>

<p>Also, for the question 2x-5<3, was the question asking for the LARGEST value of x? because I put 3. However, someone earlier said that the question was 2x-5>3 and was asking for the SMALLEST value of x, which would make the answer 5. What did everyone else put? Since this is such an easy question, I am praying I did not misread it.</p>

<p>And FYI, the intesecting question with the angles >90 but <180 is 2.</p>

<p>For the train one, it said her watch was 7 mins ahead, so u do 2:45 -7 to get 2:38, and it asked for how long she really got there before the train took off, so wouldnt you just do the time the train took off (i dont remember the time) - 2:38? I dont remember the answer tho i just want to make sure this is how to do it</p>

<p>Yes, that’s how you do it. The train took off at 3:04 so it would be 26 minutes. </p>

<p>And also, doe anyone remember the question for the last question on the 20 min section with the 2 triangles? People are sayin the answer is 17, but I don’t remember putting a 17 and I can’t remember the question.</p>

<p>Did the questions that had (r,s) and the equation 5x^3 + 4x^2… Ask For the R value or S value of the Y-intercept? Please say S…asking for R is too easy for an end of the section question. Obviously the x value would be 0 at the y intercept that’s common sense. Ugh please be -2…</p>

<p>@aria The picture was a triangle with angles of 70 and 40. The last angle had to be 70, so the two sides were equal length. It gave you that the two sides were 5x-13 and 2x+5, so solving for x gives 6. It then asked you to find the length of one of the sides, so 5*6-13 = 17.</p>

<p>@Adeeetz Yeah, the answer was 0.</p>

<p>*** *** that would be the one math I get wrong hgafahgicajhfacfy</p>

<p>What does everyone believe the a+b/2 answer is. Is the general consensus II and III? Because thats what i put</p>

<p>Think about distribution of square root
sqrt AB = sqrt A * sqrt B</p>

<p>sqrt B = (A+B)/2*sqrt A</p>

<p>Divided by ZERO?</p>

<p>you will see A can’t be ZERO</p>

<p>I think this problem is about Mathematics Fallacy</p>

<p>hey i got 1 for the triangle perimeter is 14 question in math. It said that the perimeter is 14 and the length of one side is 6. The question asked which of the following could not be the length of the shortest side if all the sides have a different length. The answer is 1: the shortest side cannot be 1 because then the sides would be 7,6, and 1 and the triange inequality theorem is not in accordance with this.</p>

<p>@whybrick If you assume a is 0, you can’t divide both sides by zero anyway. No fallacy there.</p>

<p>yeah
that means A can’t be ZERO</p>