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Questions 2:

This website will alow you to do just that  :

https://www.easycalculation.com/statistics/coefficient-of-variance.php

      1                       A                        B 

________  =       _____     +      _________

k ( k + 3)                 k                    k +  3

We can use  the method of partial fractions to solve this

Mutilply through by   k ( k +3)   and we have

1  =  A( k + 3)   + Bk        simplify

1 = (A + B)k  +  3A       equate terms   and we have this system

A + B    =   0 

3A  = 1    ⇒   A  = 1/3

Which means that B   =   -1/3  

So  (A, B)  =  (1/3,  -1/3 )

Answered here :

https://web2.0calc.com/questions/help_42954

(135-x)/5 = hours connie runs

x/7 = hours Bonnie runs

(135-x)/5 + x/7 = 24

135-x + 5x/7 = 120

945-7x+5x = 840

-2x = -105

x = 52.5 miles = distance of Bonnie

52.5 miles / 7 m/hr = 7.5 hours = 450 minutes

PT = 4x + 3 and TQ = 6x - 7  

set TQ = PT                             6x – 7  =  4x + 3

subtract 4x from both sides      2x – 7  =  3

add 7 to both sides                         2x  =  10   

divide both sides by 2                       x  =  5

check by plugging 5 into original expressions

PT  =  (4)(5) + 3  =  23

TQ  =  (6)(5) – 7  =  23

.

MOST employees in the company are fairly young.

This means that the number of young employees COMPARED to the other aged employees are much more.

So a good comparison chart like a pie chart, or circle graph would show a most comparison .

The second terms of Rows 1 to 100 of Pascal's Triangle =1 +2 + 3 + 4 + 5 +..........+100 =[100 x 101] / 2 =5,050. 

That you do in LaTex is you write, 

\sqrt{}

you fil in the brackets what the square root is.

 Hope This helps 

- wolf

you're wrong

f(n)=2ⁿ+2

THX :)

Much better. 

Coolmath