Math homework please help
1 answer:
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The area of sector is 1.57 m²
<u>Explanation:</u>
Given:
Radius, r = 3 m
Central angle of a sector = 1/9π radians
Area of sector, A = ?
We know:
Area of sector, A =
where,
α is the central angle in radians
On substituting the value we get:
Therefore, the area of sector is 1.57 m²
Answer:
Step-by-step explanation:
given that in a lottery game, a player picks 5 numbers from 1 to 46
If 4 of the 5 numbers match those drawn, the player wins second prize.
Assuming the numbers are chosen without repitition we find that the player can choose 5 numbers in 46C5 ways.
To win the prize he must choose 4 numbers form the 5 numbers in the prize and remaining 1 number any other number.
i.e. no of ways to get II price = choosing 4 numbers out of 5, and one number from 41
=
Probability of winning this prize
=