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4 years ago

I am a real number I am a rational number I am not a natural number I am less than -13 what number am I

Mathematics

2 answers:

tresset_1 [31]4 years ago

8 0

Answer:

Any number less than -13.

Step-by-step explanation:

If the number is real and rational and non-natural, this means that it can be any number in the negative number space.

Additionally, since the number has to be less than -13, then the number could be any number less than -13.

With all these things considered, the number is any number less than -13 that is real and rational.

Cheers.

kicyunya [14]4 years ago

3 0

It’s -13 because it either can be less or more

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Answer:

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Step-by-step explanation:

Step 1: Define

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3 years ago

How many different 5-person subcommittees can be formed from a club having 12 members

Wittaler [7]

Given that there are 12 persons, the first choice may be in 12 different ways, the second choice may be in 11 different ways, ther third in 10 different ways, the fourth in 9 different ways and the fith in 8 different ways, for a total of:

12x11x10x9x8 different combinations.

Now you have to take in account that 5x4x3x2 are repetitions. So you have to divide the previos counting by 5x4x3x2.

(12x11x10x9x8)/(5x4x3x2) = 792 different subcommittees.

Also, you can use the formula for combinations: C(m,n) = m! / (n! (m-n)!)

C (12, 5) = 12! / (5!) (12-5)! = [12x11x10x9x8x7!] / [5! 7!] = [12x11x10x9x8]/[5x4x3x2] = 792

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3 years ago

Use trigonometric expressions to build an equivalent trigonometric identity with the given expression: sec (x) tan (x) cos (x) c

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Answer:

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Step-by-step explanation:

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3 years ago

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Step-by-step explanation:

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3 years ago

If A and B are independent events and P(A) and P(B) are both greater than 1/2

elixir [45]

Answer:

P(A and B) is greater than 1 is never happened ⇒ C

Step-by-step explanation:

Two events are independent if the result of the second event is not affected by the result of the first event

If A and B are independent events, the probability of both events is the product of the probabilities of the both events P (A and B) = P(A) · P(B)

∵ The probability of any event is less than 1

∵ P(A) < 1

∵ P(A) > $\frac{1}{2}$

- That means P(A) is greater than half and less than 1

∴ $\frac{1}{2}$ < P(A) < 1

∵ P(B) < 1

∵ P(B) > $\frac{1}{2}$

- That means P(B) is greater than half and less than 1

∴ $\frac{1}{2}$ < P(B) < 1

∵ P(A and B) = P(A) . P(B)

- Remember the product of any fractions less than 1 is less than 1

∴ $\frac{1}{4}$ < P(A) . P(B) < 1

- That means any expression equals to P(A) . P(B) must be greater

than $\frac{1}{4}$ and less than 1

∴ $\frac{1}{4}$ < P(A and B) < 1

∴ P(A and B) is greater than 1 is never happened

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