A child has 11 stuffed animals. How many ways can she choose 3 animals to take along with
2 answers:
Answer:
165 ways
Step-by-step explanation:
That notation is read "n choose m", and it indicates the number of ways one can choose m objects from a collection of n objects, if we don't care about "order".
So in your case we have
which in terms of a "factorial" notation is
11! / 3! × (11-3)!
11×10×9×8! / 3! × 8!
990 / 3
165
I've just assumed that you know what factorial means. If you don't, feel free to ask me.
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Answer:
15.6 ft
Step-by-step explanation:
Since the sails are similar then the ratios of corresponding sides are equal.
Comparing the shortest sides, that is
10 : 6 = 5 : 3
let the longest side be x, then using proportion
=
( cross- multiply )
5x = 78 ( divide both sides by 5 )
x = 15.6
The longest side is 15.6 ft
The first trigonometric expression cot x and sin x in terms of the second expression is one over tan x and one over cosec x.
<h3>What is trigonometry?</h3>Trigonometry deals with the relationship between the sides and angles of a right-angle triangle.
Write the first trigonometric expression in terms of the second expression.
The cotangent can be written as
And the sine can be written as
More about the trigonometry link is given below.
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