<p>That’s what I thought; someone else said 6.something</p>
<ol>
<li> f(3) - f(1) = 6 </li>
<li> Segment with five distinct points: 10</li>
<li> Last problem (disk/laser): B) 987</li>
<li> Complex number: 2-3i is also a root</li>
<li> Given x=√(2+√2), find (x^2-2)^2: 2</li>
<li> Angle with slopes of line l and m (2/5 and 3/5): 9.16 degrees</li>
<li> Parametric: -1/3</li>
<li> Infinite series: 2 - (1/n)</li>
<li> f(t)=2cost and g(t)=sin(t/2), find the slope of the line connecting (0, f(0)) and (pi,g(pi)): -1/pi</li>
<li>Value of x^x as x approaches 0: 1</li>
<li>Domain, range: {1, 2, 3}</li>
<li>ln x = e^-x: 0.27</li>
<li>Average speed of car: less than 50 mph</li>
<li>Graph shift, f(x) = f(x-2) + 3: two to the right, three up</li>
<li>Graph of f(x) = 1/g(x): 3</li>
<li>(a^3)^2=123.1: 2.2</li>
<li>Extending line segment, with ratio 1:2: (8, 12)</li>
<li>Perimeter of equilateral triangle: 15</li>
<li>Unit circle/chord: 2sin(theta)</li>
<li>Perimeter of triangle on a cube with side length 7: 26.8</li>
<li>Inverse graph: D)</li>
<li>Absolute value: b</li>
<li>Volume of cone: 18.88</li>
<li>Logic (if…, then…) t >= 3</li>
<li>Period: sin(2pi)</li>
<li>Average scores/min. number of judges: 5</li>
<li>1.5 radians -> degrees: 85.9</li>
<li>5^(2x+1) = 96: take log of both sides and solve => 0.918</li>
<li>Point symmetry: I and III (about origin; across y=-x)</li>
<li>n(n+1)(n+2): divisible by 2 and 3, but not 4</li>
</ol>
<p>yea i think the rest of the 20 were like basic algebra or really obvious haha
add a(10)=155</p>
<p>14) It was f(x+2)+3 because the graph was in the 2nd quadrant</p>
<p>Light Airen is right. I plugged in the numbers they gave and it came out to this:</p>
<p>3= (-2 + 2) + 3</p>
<p>wow i answered 29 of those and got them all right! 800? probably not i usually get points of on the easy ones because i do them to fast.</p>
<p>dun worry u can miss like 4-5 more lol</p>
<p>the fed! the cube with side 7 perimeter = 29.7</p>
<p>
</p>
<p>For the complex root thing, how do you do it? There’s probably a theorem or something which I forgot. I marked 2 - 3i as the answer, but I wasn’t entirely sure between it and Insufficient data (e).</p>
<p>OH JESUS I’m so stupid… how did I miss that n(n+1)(n+2)??? OH MY GOD, WOW!!!
I hate myself, I expanded the expression into n^3 + 3n^2 + 2n, instead of seeing the obvious… oh man.</p>
<p>I’m pretty sure (hoping) that’s the only one I missed… can I still get 800? I know the curve’s usually around 45, but sometimes higher right? I hope it’s not too bad this time.</p>
<p>For #20, I’m getting 29.7. Are you sure that that wasn’t the answer?</p>
<p>@bob, take the quadratic formula for instance.</p>
<h2>2 ± sqrt(-3)</h2>
<p>1</p>
<p>Each eq. has a + and - value.</p>
<p>wait what??</p>
<p>why is 24 t>=3 and not just t>3. wasnt it the contrapositive of the statement? it gave us t<3. where does the >= come in?</p>
<p>yeah guys the perimeter is 29.7, sqrt(98) X 3…</p>
<p>21 x root 2</p>
<p>The cube had edges of length 7. By noticing the special triangle, you can see that one side of the cube lies on the leg across from the right angle in a 45 45 90 triangle. Because of that, one side of leg of the “goal triangle” must be 7√2. Since it was given to be equilateral (I believe?), you multiply that by 3 to find the perimeter.</p>
<p>7√2 x 3 = 29.7</p>
<p>
</p>
<p>The contrapositive of t<3 is t>= 3. If t<3 is false, that means t is either 3 or greater.
I know, it sucks when my brain temporarily dies too, like on that n(n+1)(n+2) problem :/</p>
<p>ohhh, ok. >.<
i still i hope i can get that 800 :o</p>
<p>its so confusing i thought it was like which “must” be true. then i thought like t>3 is part of t>=3 and i was like ok lets get this one wrong ><</p>
<p>I reasoned out the answer thinking that t>=3 was more inclusive than just t>3.</p>
<p>Would anybody like to explain what a contrapositive is?</p>
<p>Please?</p>
<p>Oh yeah another one for the consolidated list (don’t think it’s on there yet anyway)</p>
<p>Product of the slope of two perpendicular lines: -1
can anyone confirm?</p>
<p>2 more questions to add to the list
- x + x + x = x^2</p>
<p>x= 0 ,3</p>
<ol>
<li>sin(theta) = x^2
what is sin(2theta)</li>
</ol>
<p>the answer was 2x^2*sqrt(1-x^4)</p>