Official October SAT Math Discussion

Test Preparation SAT Preparation
401

<p>haha i dont recall the parabola question with the slope of 5 so assuming i get that wrong, the trail marker one wrong, and one grid in wrong can anyone approximate my score?</p>

402

<p>^ If you missed 0 and omitted 0? 800</p>

403

<p>2 missed 1 grid in wrong, 3 total</p>

404

<p>I think we’re thinking of different questions Phoenix. I know it had options 16 and 12 and some others with radicals.</p>

405

<p>HOW did u guys solve number 17 on grid ins the one with the cube??</p>

406

<p>@Snoop1, the one with the cube surface area? thats 54.</p>

407

<p>also can someone explain the parabola one to me? I ran out of time working on it but it didnt say “figure not drawn to scale” so theres no way the y-int could be 25 if the distance from the x-intercepts was 10 right? help!</p>

<p>i put 2 as the slope</p>

<p>-thanks</p>

408

<p>What was the answer to F(x)=g(x) i think it was like number 17 the one with the graph??</p>

409

<p>@phoenix how did u solve that one?</p>

410

<p>^ if u take away the shaded cube the surface area remains the same</p>

411

<p>Answer to f(a) = g(a) was a = 4.</p>

412

<p>@Snoop1, the one where you had a graph of two crossing lines? and it said find a when f(a) = g(a)? that was 4.</p>

413

<p>What was the 10(x-3) #of coordinates with positive integer coordinates for both x and y (x,y)</p>

414

<p>Phoenix how did you get 65 for the tangent circles triangle question</p>

415

<p>@hedgewig, it was y = 10 - 3x I put 1, not really sure though.</p>

416

<p>@Niquii</p>

<p>I dont get how the y intercept can be 25… is there like a formula? How did u get it from knowing two x intercepts?</p>

<p>And also can u tell me what the questions was for the high school absence problem? I don’t remember the question and I think I got it wrong…</p>

417

<p>Radii make isoceles tri</p>

418

<p>@thnkprnctn, the intercepts were 5 and -5 right, and it was negative? then, f(x) = -(x-5)(x+5) that expands into, f(x) = -x^2 + 25, so intercept is (0,25)</p>

419

<p>For the y = 10 - 3x it was asking for the sets of positive coordinates.</p>

<p>The answer was 3:</p>

<p>(1, 7)
(2, 4)
(3, 1)</p>

420

<p>@yankeesfanatic, ugh still a 770 or so.</p>