Math Section Compiled

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1

<p>Please tell me the question for any other you remember and I will edit this thread.</p>

<hr>

<p>Uphill/Downhill question</p>

<p>Downhill was 2MPH??
Uphill was 4MPH??</p>

<h2>Answer: 4/7</h2>

<h2>62x^2 // surface area question</h2>

<h2>(x+y)^2</h2>

<h2>Twin Prime Question (Primes were 17 and 19): None. Choices: I,II, III</h2>

<p>If x<y and r<s then,</p>

<p>I. x + r < y + r
II. x - r < y - r
III. xr < ys</p>

<h2>Answer: I only</h2>

<h2>x^(-1/2)</h2>

<h2>c(x) 8+.50k</h2>

<h2>solve for b was 2x+k (i think)?</h2>

<h2>14 for the 7th term</h2>

<p>(6, 10) for circle</p>

<h2>2k-a</h2>

<p>Plotted Points on a Graph</p>

<p>A. 2x+20
B. 5x+20
C. 10x+20
D. 4x
E. 12x</p>

<p><a href="http://i33.tinypic.com/20a8huc.jpg%5B/url%5D"&gt;http://i33.tinypic.com/20a8huc.jpg&lt;/a&gt;&lt;/p>

<h2>y=5x+20</h2>

<p>Six Shapes, One shaded Triangle:</p>

<h2>triangle shade 1/6</h2>

<h2>line translated (-4,-3)</h2>

<h2>6.95^a-1 answer was 6</h2>

<p>shirts and some other thing.. probabilty question</p>

<h2>answer 10</h2>

<h2>UTS</h2>

<p>Horizontal Bar's of "boys vs girls"</p>

<h2>Which year had more girls than boys? 1995? C?</h2>

<h2>the date with increase was 94-96 maybe?</h2>

<h2>value of f(x) chart was something i forget maybe 4</h2>

<h2>1/18 = 20 deg</h2>

<h2>the triangle with a=1/2 b and c=3a was 30, 60, 90</h2>

<h2>volume of triangle was 200 rad3 or something</h2>

<h2>how many values to set = 0 (x + 6)^2 was -6 (one)</h2>

<h2>0 wrapped chocolates</h2>

<h2>10 choices for food</h2>

<h2>one low point for f(X)</h2>

<h2>30 gal</h2>

<h2>24 lb rock</h2>

<h2>20000 votes</h2>

<h2>the -2<x<5 was a range of 3 to 6</h2>

<h2>remainder 2</h2>

<h2>distance to line l = 4</h2>

<h2>3 rad2</h2>

<p>Grid-ins
21
1.5
1800
36
20.5 // velocity question? 12.2/.6 = 20.5
9 // diagonals in a hexagon
196 // the sum of the odd numbers up to that number. (box)100-(box)96 // so it's 99+97=196
7.5 or 15/2 // two similar equilateral triangles with the same base and you had to find one of the sides
666 // how many numbers less than 100 are NOT divisible by 3
Anything between 4 and 5 // for the slope with greater than (3/4) less than 1 (multiple answers)</p>

<p>Three circles:
R1, R2, R3</p>

<p>R2 = 1/2 * R1
R3 = 1/3 * R1</p>

<p>Pi * R1^2 + Pi * (R1/2) ^2 + Pi * (R1/3)^2 = Pi
R1^2 + (R1^2)/4 + (R1^2)/9 = 1
36<em>R1^2 + 9</em>R1^2 + 4<em>R1^2 = 36
49</em>R1^2 = 36
R1^2 = 36/49
R1 = 6/7</p>

2

<p>what about the one which gave x y and z as lengths of a triangle? then asked which statement cannot be true</p>

<p>i got x<y-z or something like that :/</p>

3

<p>what was the question of the 24 lb rock? i dont remotely remember that anwer</p>

4

<p>

Wasn’t this 96 - 4? Also, it would be (1 + 3 + 5 + 7 … + 95), so you divide the number in the box by two and then square it.</p>

5

<p>no / it was 196 … cause all the number are the same all the way up 96… so 100 only had 97 and 99 extra… which was 196</p>

6

<p>what question was 3 rad2 to??</p>

7

<p>you have something like 12 rocks that average 15 pounds each. then you add a rock and the average is 16 pounds. how much did the rock weigh?</p>

8

<p>that was 24 lb one i think</p>

9

<hr>

<h2>(x+y)^2</h2>

<p>I think you posted this answer wrong (unless im thinking of a diff question)… the question was x+y equals the square of z, so the answer is (x+y)^.5</p>

10

<p>

Can anyone confirm it was [100] - [96]? I could have sworn it was [96] - [4], where did the 4 come from?</p>

11

<p>omg…for the math question…Six Shapes, One shaded Triangle:</p>

<p>triangle shade 1/6…</p>

<p>THere were 3 shaded shapes and 3 unshaded shapes…is this right??</p>

12

<p>If x<y and r<s then,</p>

<p>I. x + r < y + r
II. x - r < y - r
III. xr < ys</p>

<p>Can someone explain why II is not valid?</p>

13

<p>for some reason I dont remember that question</p>

14

<p>It was [100] - [96] No clue where you got the 4 from.</p>

15

<p>Edit nvm i got wrong</p>

16

<p>"If x<y and r<s then,</p>

<p>I. x + r < y + r
II. x - r < y - r
III. xr < ys</p>

<p>Can someone explain why II is not valid?"</p>

<p>x = 4 y = 5, r = 6 s = 7
4 - 6 < 5 - 7
-2<-2
That statement is false, -2 = -2, -2 is not less than -2.</p>

17

<p>does anyone know what question # that was?</p>

<p>was one of the sections only 16 questions?</p>

18

<p>Unholy sigma, you jsut answered your own question, II and III are false so only I is true</p>

19

<p>Haha no, he answered my question, and thanks for the explanation.</p>

20

<p>x+y = rad(Z)</p>

<p>is equivalent to
(x+y)^2 = z</p>

<p>reasoning
3 + 2 = rad25
(3+2)^2 = 25
(3+2)(3+2) = 25
9+6+6+4 = 25
9+16 = 25
25=25</p>