3 years ago

State which of these expressions can be written as

Mathematics

1 answer:

omeli [17]3 years ago

4 0

The answer is B y+y+y

You might be interested in

3x − 2y = 6 <br> 3x + 10y = −12<br> Find the common x and y.

Ganezh [65]

x = 1

y = -3/2

Solution: (1, -3/2)

//Hope it helps.

7 0

2 years ago

Read 2 more answers

Assume that a policyholder is four times more likely to file exactly two claims as to file exactly three claims. Assume also tha

kykrilka [37]

Answer:

1.3125

Step-by-step explanation:

Given that our random variable $X$ follows a Poisson distribution $P(X=k)=\frac{\lambda^k e^-^p}{k!} \ \ \ \ \ \ \ \ p=\lambda$

Evaluate the formula at $k=2,3:$

$P(X=2)=0.5\lambda^2e^{-\lambda}\\\\P(X=3)=\frac{1}{6}\lambda^2e^{-\lambda}$

#since

$4P(X=2)=P(X=3);\\\\0.5\lambda^2e^{-\lambda}=4\times\frac{1}{6}\lambda^3e^{-\lambda}\\\\0.5\lambda^2=\frac{2}{3}\lambda^3\\\\0.75=\lambda$

The mean and variance of the Poisson distributed random variable is equal to $\lambda$ :

$\mu=\lambda=0.75\\\sigma ^2=\lambda=0.75$

#By property variance:

$\sigma ^2=V(X)=E(X^2)-(E(X))^2=E(X^2)\\\\E(X^2)=\sigma^2+\mu^2=0.75+0.75^2=1.3125$

The expectation is 1.3125

4 0

3 years ago

A cube root is a number that can be written as the cube of an_____

Lyrx [107]

Answer:

A number <u>X</u>

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

In an examination the following scores were a chief by a group of students:

e-lub [12.9K]

A!

hope this helps you out

7 0

3 years ago

a business want to increase its number of employees by 65% to 20,460. How many employees does the company currently have?

Crazy boy [7]

Answer:

12,400

Step-by-step explanation:

Let the current employees be x

65% increase in number = 0.65x

If the total number of employees after the increase is 20,460, then;

x + 0.65x = 20,460

1.65x = 20,460

x = 20,460/1.65

x = 12,400

Hence the current number of employees is 12,400

5 0

3 years ago