Help please!! In y = mx + b form

Evaluate C_n.xP^xQn-x For the given n=7, x=2, p=1/2

r-ruslan [8.4K]

Answer:

The value of given expression is $\frac{21}{128}$ .

Step-by-step explanation:

Given information: n=7, x=2, p=1/2

$q=1-p=1-\frac{1}{2}=\frac{1}{2}$

The given expression is

$C(n,x)p^xq^{n-x}$

It can be written as

$^nC_xp^xq^{n-x}$

Substitute n=7, x=2, p=1/2 and q=1/2 in the above formula.

$^7C_2(\frac{1}{2})^2(\frac{1}{2})^{7-2}$

$\frac{7!}{2!(7-2)!}(\frac{1}{2})^2(\frac{1}{2})^{5}$

$\frac{7!}{2!5!}(\frac{1}{2})^{2+5}$

$\frac{7\times 6\times 5!}{2\times 5!}(\frac{1}{2})^{2+5}$

$21(\frac{1}{2})^{7}$

$\frac{21}{128}$

Therefore the value of given expression is $\frac{21}{128}$ .

7 0

3 years ago

According to the data, Vannessa mean quiz ...

damaskus [11]

Answer: x = 108

Given the below equation

x + 13 1/2 = 121 1/2

Firstly, we need to convert the mixed fraction into an improper fraction

$\begin{gathered} x\text{ + 13}\frac{1}{2}\text{ = 121 }\frac{1}{2} \\ 13\frac{1}{2}\text{ = }\frac{(2\text{ x 13) + 1}}{2} \\ 13\text{ }\frac{1}{2}\text{ = }\frac{26\text{ + 1}}{2} \\ 13\frac{1}{2}\text{ = }\frac{27}{2} \\ 121\frac{1}{2}\text{ = }\frac{(2\text{ x 121) + 1}}{2} \\ 121\frac{1}{2}\text{ = }\frac{243}{2} \\ \text{Therefore, the new equation becomes} \\ x\text{ + }\frac{27}{2}\text{ = }\frac{243}{2} \\ \text{Isolate x} \\ x\text{ = }\frac{243}{2}\text{ - }\frac{27}{2} \\ \text{Common denominator = 2} \\ x=\text{ }\frac{243\text{ - 27}}{2} \\ x\text{ = }\frac{216}{2} \\ x\text{ = 108} \end{gathered}$

8 0

1 year ago

Match the information with the locations where the information belongs in a resume.

Zigmanuir [339]

Answer:

1. E

2. B

3. A

4. C

5. D

Step-by-step explanation:

C. objective

4. Graphic Designer specializing in Flash presentations

An objective outlines the position you are applying for therefore, Graphic Designer specializing in Flash presentations best fits with objective.

A. Skill Summary

3. Two years as district manager of two floral retail locations

The skill summary outlines the knowledge, skills, abilities and experience that you have accumulated over the time and therefore, Two years as district manager of two floral retail locations best fits with skill summary.

E. Awards and Activities

1. Volunteered with learning disabled children

Volunteered with learning disabled children best fits with Activities

B. education

2. Wilderness Emergency Medical Certification, 2002

Education outlines systematic professional degree or certificate program therefore, Wilderness Emergency Medical Certification, 2002 best fits with education.

D. work history

5. District Manager, Home Depot 2003-2005

Work history outlines your experience that you have gained throughout your professional career therefore, District Manager, Home Depot 2003-2005 best fits with work history.

6 0

3 years ago

16. Select the equation that has only one solution.

erik [133]

Answer:

A is the answer...........

Explanation

8x+3=3x+8

8x-3x=8-3

5x=5

x=5/5

x=1

8 0

3 years ago

Verify 3/4 + (7/2 + -3/8) = 3/4 + 7/2 + (-3/8)

Mrac [35]

Answer:

true

Step-by-step explanation:

Since the parenthesis do not have a negative on the outside, we don't need to distribute the negative sign. The equation is equal to each other

Hope that helps :)

6 0

3 years ago