Scatter plot and semicircle-Math questions

Test Preparation SAT Preparation
1

<p><a href="http://i584.photobucket.com/albums/ss284/sear_squid/SAT/11and12pg13.png%5B/url%5D"&gt;http://i584.photobucket.com/albums/ss284/sear_squid/SAT/11and12pg13.png&lt;/a&gt;&lt;/p>

<h1>'s: 11 &12</h1>

<p>Please explain the answers to me. Thanks in advance.</p>

2

<h1>11</h1>

<p>Ok, so , what we see? Fist of all we must know that D=2r, where D=diameter and r=radii(radius). So if in mind from points S we make a line to x line, wee see difference btw. R=4 and difference is 1.5 so we count 4+1.5 =5.5 and because it lies on negative line the answer is -5.5.</p>

3

<h1>12</h1>

<p>deleted? why? It was about average. So what you must know it how to find average. For example average of y z x . we must make a sum of it y+z+x and divide for count number of it. there are 3 letters(N) so we sum divide to amount and average of y z x will be y+z+x/3=average of each.</p>

4

<p>I know how to find the average, but I am lost on how to solve the scatterplot question.</p>

5

<p>what mean “scatterplot”?</p>

6

<p>A scatter plot is a type of graph, depicted in question #12.</p>

7

<h1>I’m sorry the answer for #11 is r=4 D=8 point S divides to 2 equal parts. 1.5 is in + and -3.5 is x .Answer is -3.5. I’m really sorry. It’s night in Baku and my brain is tired</h1>

8

<p>nothing to afraid. Just sum cost of all points and divide it to their number.</p>

9

<p>Don’t be sorry. Thank you for the help! :)</p>

10

<p>be welcome.</p>

11

<p>“You’re welcome,” is the correct response.</p>

12

<p>I think C is the answer for th 12</p>

13

<p>11 is E
It’s a semicircle. The center is at (1.5, 0) radius is 4, 1.5-4=2.5 There the coordinate is (2.5, 0)
12 is C
The line of best fit is the arithmetic mean basically. Just take the cost and divide by ounces to get cost/ounce
5/40=.125~.12</p>