Few Sept ACT question to discuss

Test Preparation ACT Preparation
1

<p>A few math questions I thought were challenging:</p>

<p>The first one was something that said the terminal side of Quadrant II... and that the 0 (its a symbol that i dont know how to make on my computer) was sin 3/4.... what was the answer and how did you get it?</p>

<p>There was also y^8=4 and y^7= x/3..... i know the answer is 4x/3... but how did you get it?</p>

<p>and also the question about the garden problem where you needed to make 3 rows and each plant needed to be 2 feet from center adn 2 feeet from edge.</p>

<p>and the last one was that matrix question...</p>

2

<p>wasn't it the area of the garden divided by the area of the bushes (2x2) ?? i think i got 40</p>

3

<p>no it had to be 3 rows</p>

<p>i think the answer is either 16 or 27.</p>

4

<p>You had to split up the y one</p>

<p>(y^8)=(y^7)(y)
4=(x/3)(y)
y=4x/3 tricksie, a little.</p>

<p>The quadrant one I wasn't positive about, but I got -4/sqrt(7). Using the pythagorean theorem you get sqrt(7) as the one side. And then opposite/adjacent = 4/root7, but it was a diff quadrant so negative.</p>

<p>The matrix one was -2. </p>

<p>I wasn't sure about the garden one. sorry.</p>

5

<p>I got 3/5 for the tangent one. i was thinking triangle (3,4,5), 5 the terminal angle, 3 the height and 4 the width. lol so I'm not very confident with that answer at all, I just wanted it to be easier than it was.</p>

<p>I got 4x/3 but i'm not sure how now...</p>

<p>-2 for the matrix question</p>

<p>27 for the rose bush one.</p>

6

<p>some said 16 was the right answer for the rose bush one.</p>

7

<p>Is the tangent one the same one that had 4/(sqrt7) ? If it was i'm pretty sure that wasn't the answer because it wasnt a 3-4-5 triangle. SIN was 3/4, so the hypoteneuse itself was 4.</p>

8

<p>I'm pretty confident that it's 27, I mapped it out and everything. 16 doesn't even divide evenly by 3 and your answer should have since it was 3 rows in a rectangle</p>

9

<p>the tangent one was -4/sq. root 7
It was in the second quadrant so tan must be negative
It was not a 3-4-5 the hypotenuse was 4</p>

10

<p>I hope it's 27 because that's what i guessed ;D That was C right ? (or H)? I guessed either 16 or 27.. but in the end i picked 27 i think, lol. one of the very very few i couldn't figure out</p>

11

<p>does anyone remember what the letter answer to the logarithms question was? i saw it and immediately skipped it just based on first glance. i went back and ruled out some but i'm not sure if i got it right</p>

12

<p>its just when log subtracts... just divide them and take out the log.</p>

<p>im pretty sure it was A?</p>

13

<p>The rose garden was how many roses she could fit 2 ft apart in three 20 ft rows.</p>

<p>I just wrote it out kinda vulgarly ( as far as math standards):</p>

<p>2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2</p>

<p>whereas | = a rose bush. 9 rose bushes per row, 27 bushes total.</p>

<p>You just couldn't forget that the ones on the ends had to be 2 ft from the walkway.</p>

14

<p>It was like log(1+A) - log(1-A) = log (something) - log (something)
The answer I think was (1+A)/(1-A) = (something)/(something)
cus when you subtract same base logs it's like dividing the values I think, not 100% on that one.</p>

15

<p>they didn't have to be two feet from the walkway, the CENTER of the rosebush had to be two feet from the walkway. and the centers of each of the rosebushes had to be two feet from each other. i think the wording is what made it so hard</p>

16

<p>I got 27 too... and i think 4x/3 (dont remember) and im pretty sure i had -2 (dont remember if I changed it...)</p>

17

<p>log one~!? what is it ahhhh!?</p>

18

<p>For the log one you dropped the logs but the terms got divided.</p>

<p>Ex: log(x)-log(7) = x/7</p>

19

<p>ohhh,... riiiight... do you remember what letter it was!?</p>

20

<p>I'm not sure that we had the same test form, but the answer to the log one was A/F on mine. (Just remember that it was the first choice)</p>