Answer:
Step-by-step explanation:
Given is the list the highway gas mileages (in miles per gallon)
22, 24, 26, 26, 28, 28, 29, 30, 30, 30, 31, 34, 34, 34, 34, 35, 36, 36, 41, 41
We construct stem and leaf plot as follows:
Stem Leaf
2 2 4 6 6 8 8 9
3 0 0 0 1 4 4 4 4 5 6 6
4 1 1
b) 34th percentile = 34*20/100 = 6.8th entry
i.e. in ascending order,
7th entry = 29 is the 34th percentile.
-23
I just did 8+15=23 but made it negative. so you can do
-23+8= -15
27 boys
The ratio of boys to girls is 3 to 6. The total is (3+6) is 9.
Using the ratio of boys to total (3 to 9), we set it equal to the ratio of boys to total students (81)
3 b
---- = -------------
9 81
We can solve this using cross products.
3*81 = 9b
243 = 9b
Divide each side by 9
243/9 =9b/9
27 =b
There are 27 boys
8.
9.
^#8^
^#9^
y-10=2/3(x-8)
(y2-y1)/(x2-x1) is the equation for slope so put your points in you get 2/3 once simplified then its just a matter of putting points in the equation y-y1= m(x-x1)
