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3 years ago

Can someone pls help me quickly

Mathematics

1 answer:

nydimaria [60]3 years ago

4 0

Answer:

B AND F

Step-by-step explanation:

!!!!!!!!

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U = 2x - 2 , solve for x.

pochemuha

2u! Literal equations are very hard I suggest using math way.com or photo math regarding these problems

3 0

3 years ago

4. The random variable x is the number of occurrences of an event over an interval of ten minutes. It can be assumed that the pr

AnnZ [28]

Answer:

a) We have the mean number of events is interval(5.3 events in 10 minutes), which constitutes the Poisson probability distribution.

b) 5.3

c) 5.3

Step-by-step explanation:

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

$P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}$

In which

x is the number of sucesses

e = 2.71828 is the Euler number

$\mu$ is the mean in the given time interval.

a. What probability distributions' properties is this?

We have the mean number of events is interval(5.3 events in 10 minutes), which constitutes the Poisson probability distribution.

b. What is the expected value of the random variable x?

It is known that the mean number of occurrences in ten minutes is 5.3.

So the mean is $\mu = 5.3$

c. What is the variance of the random variable x?

In the Poisson probability distribution, the variance is the same as the mean. So the variance is 5.3.

5 0

3 years ago

The length of a rectangle is represented by x2 + 3x + 2, and the width is represented by 4x.

Amanda [17]

A: Perimeter = 2*length + 2*width = 2x^2 + 14x + 4

B: Area = length*width = 4x^3 + 12x^2 + 8x

5 0

3 years ago

13. jewelry marena is using a certain number of blue beads in a bracelet

kherson [118]

The simplest expression that represents the total number of beads in her bracelet design is 2b + 7.

Expression:

An expression is the sentence with a minimum of two numbers or variables and at least one math operation.

This math operation can be addition, subtraction, multiplication, or division.

The structure of an expression is:

Expression = (Number/variable, Math Operator, Number/variable)

Given,

Jewelry Marena is using a certain number of blue beads in a bracelet

design. she will use 7 more red beads than blue beads.

Here we need to write an expression in simplest form that represents the total number of beads in her bracelet design.

Assign a variable for the unknown value.

Let b be the number of blue beads for the bracelet.

The number of red beads will be represented as b + 7.

Determine the expression for the total number of beads.

Then we can written it as,

=> b + (b +7)

=> 2b + 7.

Therefore, the total number of beads can be written as 2b + 7.

To know more about Expression here.

brainly.com/question/14083225

#SPJ4

3 0

2 years ago

Each lap around the park is 0.58 mile. Jessica walked 3.25 laps around the park. How many miles did Jessica walk around the park

Fynjy0 [20]

Answer:

5 miles but she did walk part of another mile so that would be 5.35.

Step-by-step explanation:

you can take 3.25 and subtract that by 0.58 until you can't do it anymore. Also I didn't know if you wanted the exact amount which would be 5.35 but total miles is only 5. Hope this helps!

7 0

3 years ago