June SAT Math II Thread

<p>This should clear it up. A root of a quadratic is a value that when plugged into x will make the equation equal zero. in this case, the equation would become (X-8)(X-16). this would make the roots 8 and 16. if you know this, you probably got (x+8)(x+16).</p>

<p>@laptop do u remember the question and choices (I, II, and III)?</p>

<p>sooo for #50, was the answer D. i randomly guessed haha</p>

<p>@Scrub01
ya i think it was:
I. Sin2x>sinx
II. Cosx>cos2x
III. Tanx>sinx</p>

<p>Oh the question…it had a restriction that the choices were in the first quadrant or something…0<x<pi/2</p>

<p>so far compiled:
“For the prime number one, I put the “2 is a prime number””
180 n^k question was 30
0.32 for lake county
F(x) = g(x)(x-2) +r was f(2)
599.7 or something
The weird function that had a horizontal asymptote and exponents like -2x -> one time
The trig question with ST/SR -> tany
“Length of chord BC” -> 15.3
Distance between cars -> 60
Double of one root in the equation x^2 - 24x + c (c was 128 I think) -> 16 (the answer), other root was 8
Area of rectangle created under the sine curve -> ~1.1
19th term
Finding Q given midpoint (1,3) and P(4, 5) -> (-2, 1)</p>

<p>sqrt(2)-sqrt(3)
Last question is III and I</p>

<p>I. Sin2x>sinx
II. Cosx>cos2x
III. Tanx>sinx
only II and III are correct</p>

<p>for question 48, was it a “which of the following are true” or was it asking for false? i cant remember</p>

<p>Does anyone remember the answer to the question that said y=x^2.6 and it was asking what logy equaled…sorry if this question was already discussed :/</p>

<p>^2.6 log x lol</p>

<p>1/absolute value(x-2) thing anyone? i got -3.56 or something like that</p>

<p>^i got the same answer</p>

<p>@laptop are u positive that was the domain…or was it 0<x<pi?</p>

<p>What was the answer to the one question asking about the maximum of a function? some of the answer choices are 50, 750, etc.</p>

<p>@Scrub
im pretty sure that was the domain…but i could be wrong…</p>

<p>Does anyone remember the exact function when the question asked you to see how many times it crossed the x-axis?</p>

<p>can u refresh my memory of the tany question.</p>

<p>@alex it crossed once. i dont remember the exact equation, but it steeply increased from the positive side, crossed the x-axis, reached a max @ about x=0, then curved down to the right and went horizontal to the asymptote of y=0</p>

<p>Newton391244:</p>

<p>Yeah, that would make more sense because (letting x be pi/3)-------------></p>

<p>sin(2x) < sinx -----------------------------> .037 < .018 </p>

<pre><code> is false.
</code></pre>

<p>hey any advice if I omitted 4 (was hella stupid and slow)
and possibly missed 1 judging from this discussion (idk what I put though, could’ve been one of the ones I left blank), it is possible for me to get 800? If not, then I’d cancel.</p>

<p>@altamash there was a right triangle with its hypotenuse down, the left angle was x, an altitude was dropped from the right leg, creating 3 similar triangles, the right (not 90 degrees right) angle of the big triangle was y, the same as the small one, and they were similar so the ratio was the same for tan y</p>

<p>confusing sorry i cant draw a diagram</p>

<p>EDIT: 2 similar triangles</p>