2. there are 20 marbles in a bag. 8 are blue, 3 are red, and 9 are green. what is the probability of pulling
out a blue marble?

2/5

Step-by-step explanation:8 out of 20 marbles reduces down to 2/5.

Step-by-step explanation:

8/20 or a simplified answer is 2/5

You know that there is 20 marbles in the bag. But you need a blue one so you are wanting one of the 8 blue ones that are in the bag. So you have 8/20 chance of getting a blue marble. If you need a percentage then do 8 divided by 20.

heudhduxhdnshenebdutbbt

step-by-step explanation:

hrhhdhdbbrurb ees

geometry: triangles

solvers

lessons

answers archive

call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

25.45584