math question

<p>it was from wednesday's psat. triangle along x axis had a distance, which was the height of 6. Area had to be 9<x<10. im="" guessing="" answer="" has="" to="" be="">3, <3.4?</x<10.></p>

<p>Do you mean that the x distance AND the height were 6? Or that the x axis distance is the variable x?</p>

<p>the cordinate for the vertex was (6, P). So the distance/height would be 6. So yes to the first question.</p>

<p>I got 1.6 for this one I think?</p>

<p>What’s </p>

<p>The question when it asks 2^x+2^y
When x+y=4,</p>

<p>I got 16… Someone told me 8?</p>

<p>If x+y=4, then 2^x+2^y has to equal 2^4, which equals 16, so you’re good.</p>

<p>how could u have gotten 1.6? It should be .5x6x(any answer greater than 3 and less than 3.35, i put 3.2)</p>

<p>^ a lot of people got 1.6 as well…</p>

<p>Well if you get the areas of one of the triangles it’d be 1.6*6/2= one of the triangle. & then to find the second triangle it’s the same thing… & if you add up your calculations you’d get something that’s >9 & >10.</p>

<p>smarty, can you refresh me on the question? perhaps i read it wrong</p>

<p>For the triangle one .167>x>1.5 I put 1.51. This is because the triangle’s base is from
(6,p) to (6,-p) Logic this one out, the base’s length is 2p because its 1p from -p to 0 and then another 1p from 0 to p. Then, of course, the height is 6 since the vertices are both on 6. So you know your base is 2p and your height is 6, plug that into A=bh/2. So so 6<em>2p/2= 6</em>p. And 6*p, according to the question, must be between 9 and 10. That’s how you get the range in my first sentence.</p>

<p>ahh, i see.</p>

<p>& if you look at the graph… The scale of a 3.2, would be too far off…</p>

<p>What about the question regarding blue, red, and white socks?</p>

<p>The socks one is 4. Draw it out on a piece of paper and try to pick as many socks without picking the same one twice. You’ll pick each sock color once and then you’re left having to choose one of the colors again at 4.</p>

<p>So did the problem ask how many attempts were necessary to have to separate colors or two of the same?</p>

<p>Two separate colors or two socks from the same color*</p>

<p>Can someone explain to me the Arithmetic formula used for the Dog question & the Sock question? Please? I don’t seem to u sees tad sequences…</p>