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2 years ago

Which statement is true about the function f(x) =

Mathematics

1 answer:

Andrei [34K]2 years ago

8 0

What are the options?

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A mosquito is walking at random on the nonnegative number line. She starts at $1$. When she is at $0$, she always takes a step $

nikitadnepr [17]

Answer:

The expected number of times is 4.

Step-by-step explanation:

Looking at the question, we see that this follows a geometric distribution because it is asking for the expected number of trials hat will bring about the FIRST SUCCESS. The probability of success is

$\frac{1}{4}$

Since it is a geometric distribution, we know that the expected value of a random variable X, E(X) that follows a geometric distribution is given as:

E(X) = 1/p where p is the probability of success.

Therefore, the expected number of times will be

E(X) = 1/(1/p) = 1/(1/4) = 4.

Hence, the expected number of times is 4.

4 0

2 years ago

Explain how to calculate the radius of a<br> circle if you know its diameter.

Marianna [84]

Answer:

r=d÷2 is the right answer

4 0

2 years ago

F(x) = 9x-7. f o f (2)

Serga [27]

Answer: 11

Step-by-step explanation: First, 9 times 2 is 18. Then subtract 18-7 which equals 11.

8 0

3 years ago

The first three terms in the binomial expansion of (a+b)^n in ascending powers of b, are p,q and r respectively. show that q^2/p

katen-ka-za [31]

First 3 terms are a^2 + n a^(n-)1 b + n(n-1)/2 * a^(n-2) b^2

So q^2 / pr = (n^2 * a^(2n-2) * b^2 ) / (1/2 * a^n * (n(n-1) * a^(n-2) * b^2 )

= n^2 * a^2n-2 * b^2

-----------------------------------

1/2 n(n-1) * a^(2n-2) * b^2

= 2n / n - 1 as required

given p = 4, q=32 and r = 96:-

32^2 / 4*96 = 2n / n-1

2n / n-1 = 8/3

6n = 8n - 8

2n = 8

n = 4 answer

7 0

2 years ago

Yea I need help<br><br> I’ll give 20 points

Marianna [84]

Answer:

Step-by-step explanation:

i hope this helps :))

5 0

2 years ago

Read 2 more answers