The stem and leaf plot shows the number of minutes Cal talked on his phone each day for the past 14 days. A stem and leaf plot is shown. Stem, 0; leaf 0, 5. Stem, 1; leaf, 1, 5. Stem, 2; leaf, 6. Stem, 3; leaf, blank. Stem, 4; leaf, 5, 6, 6, 6. Stem, 5; leaf, 2. Stem, 6; leaf, 0. Stem, 7; leaf, 1. Stem, 8; leaf 4, 7.

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

$6.42

step-by-step explanation:

sas (side angle side)

aa (angle angle)

sss(side side side)

sas find two sides with an angle in between

aa is finding two angles and the third will add up to 180

sss find all sides

step-by-step explanation: