Please help me with question 21! Twenty Points!

8/15

Step-by-step explanation:

Step 1:

Total number of pins for the first draw  = 10

Number of blue pins = 3

Number of green pins = 7

Probability of the first pin drawn is blue is 3/10

For the second draw, without replacement

Total sample space = 9

Number of blue pins = 2

Probability that the second pin drawn is also blue is 2/9 [because the pin is drawn without replacement]

So probability that both the pins drawn are blue is 3/10*2/9 = 6/90

Step 2 :

To find the Probability that both the pins drawn are green

Total sample space for the first draw  = 10

Number of green pins = 7

Probability of the first pin drawn is green is 7/10

For the second draw, without replacement

Total sample space = 9

Number of green pins = 6

Probability that the second pin drawn is also green is 6/9 [because the pin is drawn without replacement]

So probability that both the pins drawn are green is 7/10*6/9 = 42/90

Step 3:

Probability that both the pins drawn are of the same color, that is both are blue or both or green is

6/90 + 42/90 = 48/90 = 8/15

step-by-step explanation:

consider an orange peel: if you want to try and lay it flat, you have to stretch it, we know exactly how things are being stretched or squashed at any given point. we have many different map projections because each has different patterns of some projections can even preserve certain features of the earth without