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3 years ago

6

Jack use 25% of the memory card on his digital camera while taking pictures at a family reunions if jack took 96 pictures at a f

amily reunions how many pictures can the memory card hold
PLEASE HELP I NEED THIS ANSWERED

1 answer:

mihalych1998 [28]3 years ago

7 0

384 I think yessssssssss

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1/3 (4 ∙ 3) + 23<br> I need help

ANTONII [103]

Answer:

27

But tell me the exact question it has on there

Step-by-step explanation:

8 0

3 years ago

Need help please!! Will give points

Nataly [62]

Answer:

1. $\bar X=5.10$

2. $\sigma=0.47$

3. $\sigma^2=0.22$

Step-by-step explanation:

<u>QUESTION 1</u>

The given data set for the expenditure is

$4.85,5.10,5.50,4.75,4.50,5.00,6.00$

The formula for calculating the mean is given by,

$\bar X=\frac{\sum x}{n}$

We need to add all the expenditure and divide by the total number of days.

$\bar X=\frac{4.85+5.10+5.50+4.75+4.50+5.00+6.00}{7}$

This gives us,

$\bar X=\frac{35.7}{7}$

$\Rightarrow \bar X=5.10$ to the nearest hundredth.

<u>QUESTION 2</u>

The standard deviation of the data set is given by the formula;

$\sigma =\sqrt{\frac{\sum(x-\bar X)^2}{n} }$

This implies that,

$\sigma =\sqrt{\frac{(4.85-5.10)^2+(5.10-5.10)^2+(5.50-5.10)^2+(4.75-5.10)^2+(4.50-5.10)^2+(5.00-5.10)^2+(6.00-5.10)^2}{7} }$

This will give us,

$\sigma =\sqrt{\frac{(-0.25)^2+(0.00)^2+(0.40)^2+(-0.35)^2+(-0.60)^2+(-0.10)^2+(0.90)^2}{7} }$

$\sigma =\sqrt{\frac{0.0625+0+0.16+0.1225+0.36+0.01+0.81}{7} }$

$\sigma =\sqrt{\frac{61}{280} }$

$\sigma =0.466775$

to the nearest hundredth,

$\sigma =0.47$ .

<u>QUESTION 3</u>

The variance is the square of the standard deviation.

$\sigma^2 =(0.46675)^2$

$\sigma^2 =0.217857$

To the nearest hundred gives,

$\sigma^2 =0.22$

3 0

3 years ago

What's A(-2,-4),B(2,4)

dexar [7]

AB = $\sqrt{( 2 + 2 ) ^{2} + (4 + 4)^{2} } = \sqrt{16 + 256} = \sqrt{272} = 16.49$

5 0

3 years ago

Solve the system of equations.<br> 2y - 3x = -27<br> 5y + 3x = 6<br> What is y?

Artyom0805 [142]

Answer:

Sorry I can't answer this question but, I can say this...

The three methods most commonly used to solve systems of equation are substitution, elimination and augmented matrices. Substitution and elimination are simple methods that can effectively solve most systems of two equations in a few straightforward steps.

7 0

3 years ago

Read 2 more answers

Sean read 1515 of a book in 112112 hours. How long will it take Sean to read 1212 of this book?

Fittoniya [83]

1515 of the book was read in 112112 hours.

1 of the book will be read in 112112/1515 hour

1212 of it will then be read in: ( 112112 /1515)* 1212

= ( 112112 /1515)* 1212 use calculator

= 89689.6 hours.

Hope this clarifies it.

5 0

3 years ago