B. 9
3+3+7-4
6+7-4
= 9
The answer is B.
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http://tex.z-dn.net/?f=4%3D1%5E2%2B3%3D1%2B3%3D4%5C%5C%5C%5C7%3D2%5E2%2B3%3D4%2B3%3D7%5C%5C%5C%5C12%...
Answer:
Hence the probability that 1 pair of red socks and 1 black skirt are chosen at random is .
Step-by-step explanation:
Let A denotes the event that 1 pair of red socks are chosen.
Let B denote the event that a 1 black skirt is chosen.
let P denotes the probability of an event. ( Probability of an event is defined as the ratio of Number of favourable outcomes over the total number of outcomes)
and
Hence, the probability that 1 pair of red socks and 1 black skirt are chosen at random i.e. is given by:
(since the events are independent)
Hence,
Step-by-step explanation:
You're only finding half of a circle but since you have 2, it is possible to just do the area of a circle which is
3.5 x 3.5 = 12.25
Because the radius of your circle is 3.5m but there are 2 of them you subtract 7 from 18 which give you 11:
Then you multiply 11 by 7.
= 77
Then add it all together.