All categories

3 years ago

C)PLEASE MAN PEOPLE ARE USING ME FOR POINTS

Mathematics

2 answers:

sp2606 [1]3 years ago

8 0

Answer:

the one above is right lol

Step-by-step explanation:

UNO [17]3 years ago

3 0

The measures of spread include the range, quartiles and the interquartile range, variance and standard deviation. Let's consider each one by one.

Interquartile Range:

Given the Data -> First Quartile = 2, Third Quartile = 5

Interquartile Range = 5 - 2 = 3

Range: 8 - 1 = 7

Variance:

We start by determining the mean,

$\:1+\:2+\:3+\:3+\:3+\:5+\:8 / 7 = 3.57$

n = number of numbers in the set

Solving for the sum of squares is a long process, so I will skip over that portion and go right into solving for the variance.

$\sum _{i=1}^n\frac{\left(x_i-\bar{x}\right)^2}{n-1},\\\\=> SS/n - 1\\\\=> 31.714/7 - 1\\=> 5.28571$

5.3

Standard Deviation

We take the square root of the variance,

$\sqrt{5.28571} = 2.29906$

2.3

If you are not familiar with variance and standard deviation, just leave it.

You might be interested in

Fill in the missing parts. 7 is _____ of 12

DanielleElmas [232]

Answer:

mujhe brainliest mark kar fir answer

7 0

3 years ago

Molly purchased 8 apples for $2.96 while looking at her her receipt Molly divided 2.96 by 8. Why might Molly perform this calcul

Lady_Fox [76]

Total number of apples purchased by Molly = 8

Total cost of the apples = $2.96

Since, Molly divided 2.96 by 8.

We have to determine the reason, for which Molly performed the calculation.

So, he divided the total cost $2.96 by '8', that is the number of apples in order to find out how much she paid per apple.

So, $2.96 \div 8 = 0.37$

So, $0.37 is the cost of per apple.

6 0

3 years ago

Help please!!

slava [35]

Answer:

$\displaystyle \sin(x) + x\cos( \alpha ) + \rm C$

Step-by-step explanation:

we are given

$\displaystyle \int \frac{ \cos ^{2} (x) - \cos ^{2} ( \alpha ) }{ \cos( x) - \cos( \alpha ) } dx$

we want to Integrate it

notice that, the denominator can be rewritten by using algebraic identity

remember that,

$\displaystyle {a}^{2} - {b}^{2} = ( a + b)(a - b)$

therefore

rewrite the denominator by using the identity:

$\displaystyle \int \frac{ ((\cos (x) + \cos ( \alpha) ) ( \cos(x) - \cos( \alpha ) ) }{ \cos( x) - \cos( \alpha ) }dx$

reduce fraction:

$\displaystyle \int \frac{ ((\cos (x) + \cos ( \alpha) ) ( \cancel{ \cos(x) -\cos( \alpha ) ) }}{ \cancel{\cos( x) - \cos( \alpha ) } }dx$

$\displaystyle \int \cos(x) + \cos( \alpha ) dx$

recall that,

$\rm\displaystyle \int f(x) \pm g(x)dx =\int f(x) \pm \int g(x)dx$

by that

we get

$\displaystyle \int \cos(x) dx + \int \cos( \alpha )dx$

we also know that,

$\displaystyle \int \cos(x) = \sin(x)dx$

and also the Integration of a constant is always cx

so,

$\displaystyle \sin(x) + x\cos( \alpha )$

and of course we have to add constant

$\displaystyle \sin(x) + x\cos( \alpha ) + \rm C$

5 0

3 years ago

Which runner has the fastest pace?

alex41 [277]

Answer:

the correct answer is distance 2 and time 18

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

This is the call plan for Robert's cell phone:

butalik [34]

To answer this, first make an equation representing the data:

15+ 0.20X= Bill

now plug in data you know:

15 + 0.20(30)= bill

and finally solve it:
Bill= $21.00

4 0

4 years ago

Read 2 more answers