She brings 3 donuts because a dozen is 12 and 1/4 of 12 is 3.
(4,-16) factor 3/4
3/4 ×4=3 , -16×3/4= -12
B' (3,-12)
Answer:
0.384
Step-by-step explanation:
pet supplier has a stock of parakeets of which 20% are blue parakeets
20/100 = 0.2 blue parakeets (success)
1-0.2 = 0.8 not parakeets (not success)
A pet store orders 3 parakeets from this supplier
we need to find the chance of getting exactly one blue from 3 parakeets
n=3, r=1, p = 0.2 , q=0.8
0.384