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Tju [1.3M]
3 years ago
14

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
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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 distributionP(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
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