Need help on specific Math, Reading, and Writing Questions.

Test Preparation SAT Preparation
1

<p>Hey below I posted images of some math, reading, and writing questions and I was wondering if someone could explain the answers to them. Thanks! </p>

<p>SORRYFOR THE ROTATED ONES, just paste it into Paint and rotate :(</p>

<p>

<a href="http://dl.dropbox.com/u/33022140/SAT/Photo%20Dec%2005%2C%204%2035%2052%20PM.jpg%5B/img%5D"&gt;http://dl.dropbox.com/u/33022140/SAT/Photo%20Dec%2005%2C%204%2035%2052%20PM.jpg

</a>

<a href="http://dl.dropbox.com/u/33022140/SAT/Photo%20Dec%2005%2C%204%2030%2014%20PM.jpg%5B/img%5D"&gt;http://dl.dropbox.com/u/33022140/SAT/Photo%20Dec%2005%2C%204%2030%2014%20PM.jpg

</a>

<a href="http://dl.dropbox.com/u/33022140/SAT/Photo%20Dec%2004%2C%206%2056%2010%20PM.jpg%5B/img%5D"&gt;http://dl.dropbox.com/u/33022140/SAT/Photo%20Dec%2004%2C%206%2056%2010%20PM.jpg

</a>

<a href="http://dl.dropbox.com/u/33022140/SAT/Photo%20Dec%2003%2C%202%2019%2004%20PM.jpg%5B/img%5D"&gt;http://dl.dropbox.com/u/33022140/SAT/Photo%20Dec%2003%2C%202%2019%2004%20PM.jpg

</a></p>

<p>Thanks!</p>

2

<p>Light bulb Problem.
The probability of each bulb failing is 2/100, so the probability of each bulb working is 98/100. Each light bulb MUST NOT FAIL to keep the whole string of bulbs alive. Thus, the answer is (98/100)^20.
This seems very uncharacteristic of typical SAT questions. Are you sure these are SAT math questions?</p>

3

<p>Blood Problem
(a) Add the probabilities of B and O, since those are the two types a person with B blood can accept.
13%+44%=47%
(b) (Probability of wife with B)<em>(Probability of husband with A)
.37</em>.13
(c) Husband can have either A or B and wife must be opposite of husband’s choice
2<em>.37</em>.13
(d) 1-(probability of no blood type O)
1-(.44)^2</p>

4

<p>Either of the two plans are acceptable as both will work equally well.
Either is singular, so “are” should be is.</p>

5

<p>Running Math Problem.
We know three things:
Speed to school: 6mph
Speed from school: 4mph
Total time 1 hour.
Rate<em>time=distance
Distance/time=rate
6</em>t1=x
4<em>t2=x
The ratio of times is 3:2.
Thus we can set up an equation.
t1+t2=1 hour, but we know 3(t1)/2=t2
(t1)+3(t1)/2=1 hour
t1=.4
60</em>.4=24 mins</p>

6

<p>Sorryyy the bulb and blood were from my ap stat book that i accidentally uploaded instead of sending to my friend, and thanks forthr explanations for both anways bob12345!!! :), much appreciated!</p>

<p>Now for the dreaded reading/writing >.<</p>

7

<p>Np
I would help with the CR question, but I can’t see the answer choices. I can’t choose the best answer if I have no answers to choose from lol</p>

8

<p>Hey bob12345 i was looking at the explanation you gave for the running problem, and im not sure how you turned t1+t2=1 hour into 3(t1)/2=t2
Sorry :(</p>

9

<p>And bob12345, the second image link has the answer choices :P</p>

10

<p>6<em>t1=x
4</em>t2=x
6<em>t1=4</em>t2
6<em>t1/4=t2
3</em>t1/2=t2</p>

<p>Am I right on that problem? It’d be pointless for me to talk if I was wrong LOL</p>

11

<p>I’m positive the two CR pages don’t match.
One is for question 12, and the other is for question 8. Please check your links again!</p>

12

<p>SORRYYY BOB dont bother bout the last pic haha :P</p>

13

<p>@warpclaw
Bro, the last pic is the math question. You’re confusing me more and more. :P</p>