13) y = 8x + 13
- 4x - 5y = 23

x=42/44

Step-by-step explanation:

Because y=8x+13, You will have to insert 8x+13 into y.

-4x-5(8x+13)=23

distribute 5(8x+13)

5(8x)+5(13)

40x+65

Now you have this equation: -4x-40x+65=23.

subtract -65 on both sides

-4x-40x+65-65=23-65

-4x-40x= -42

Solve the x: -4x-40x= -44x

Now you have -44x=-42

Divide 44 on each sides

-x=-42/44

x=42/44

(simplified: 21/22)

see below

step-by-step explanation:

7.   there are 10 data points in the set.   the middle point is between 5 and 6.   the middle point in the top half is 8   and the middle point in the bottom half is 3. to find the iqr , take point 8 and subtract point 3

mid term   point 8 = 100   point 3 = 88

iqr = 100-88 = 12

final   point 8 = 93   point 3 = 78

iqr = 93 - 78 = 15

the final has the greatest iqr

6.   b - there is a high data value that causes the data set to be asymmetrical for the males: the data for males are high and asymmetrical .   there is an outlier for the males that skews the data

5.   the   iqr is a better measure of spread for the movies and basketball games.   since the basketball game has an outlier, we do not want to use standard deviation for measurement.  

3.   the exam median is much higher than the class median.   the median line is farther to the right on the exams

2.   there is no way to tell what the means are from the box and whisker plots.  

for me what is finding a good play list and going out because i can not lay down and relax so i usually go to a coffee shop. i also use the gum trick and this actually works. another advice is highlighting subjects it really does me remember certain things

step-by-step explanation: