Answer: D 0
Step-by-step explanation:
circles are round and they have no straight sides
Answer:
C
Step-by-step explanation:
transposition
3x/4=1/5
xc=yc
15x/20×20=4/20×20
15x=4
x=4/15
Use the formula for the conditional probability:

Consider such events
A - a senior takes the bus to school every day;
B - a senior has a driver’s license,
then
,

and

In percent this is nearly 17%.
Answer: correct choice is B.
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