ASAP ! pleaseeee help marking brainliest i beg

Answer:

4

Step-by-step explanation:

Answer:

The mean of the sampling distribution of the proportion of downloaded books is 0.03 and the standard deviation is 0.0197.

Step-by-step explanation:

Central Limit Theorem

For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean [tex]\mu = p[/tex] and standard deviation [tex]s = \sqrt{\frac{p(1-p)}{n}}[/tex]

3% of books borrowed from a library in a year are downloaded.

This means that [tex]p = 0.03[/tex]

SRS of 75 books.

This means that [tex]n = 75[/tex]

What are the mean and standard deviation of the sampling distribution of the proportion of downloaded books

By the Central Limit Theorem

Mean: [tex]\mu = p = 0.03[/tex]

Standard deviation: [tex]s = \sqrt{\frac{p(1-p)}{n}} = \sqrt{\frac{0.03*0.97}{75}} = 0.0197[/tex]

The mean of the sampling distribution of the proportion of downloaded books is 0.03 and the standard deviation is 0.0197.

Answer:

56.757 and if u divide it : 676.75

Step-by-step explanation:

uwu

Answer:

24 tons

Step-by-step explanation:

Have a great day!!

The Answer is 24

Hope this helps<3

Answer:

x = π/4, 5π/4

Step-by-step explanation:

sin(x) - 2 = cos(x) - 2

sin(x) = cos(x)

x = π/4, 5π/4

Answer: 60%

Step-by-step explanation: multiply 18 by 100 than divide by 30

Answer:

$26.99

Step-by-step explanation:

i multiplied $89.99×.7 to get $62.993 and subtracted that from the regular amount.

hope this is right and helps :)

Answer:

Step-by-step explanation:

89.99(1-70/100)

89.99(30/100)

$26.997

$27 (rounded to nearest cent)

Answer:

160$

Step-by-step explanation:

160*.30=48

Answer:

I have no clue

Step-by-step explanation:

HAHA

Answer:

x=11.3

Step-by-step explanation:

happy to help ya :)

Answer:

x=11.3

Step-by-step explanation:

We do -0.7 on both sides and 12-0.7 is 11.3. So, x=11.3

Answer:

x = 57

Step-by-step explanation:

42 + 15 = 57

Answer:

y = -2/7x - 27/7

Step-by-step explanation:

first find the slope of the line -7x + 2y = 14 by solving for 'y'

2y = 7x + 14

y = 7/2x + 7

since the slope is 7/2 then the line that is perpendicular will need the opposite and reciprocal of 7/2 which is -2/7

knowing the slope ('m') and having the point (4, -5) we can find the y-intercept of the new line ('b')

y = mx + b

-5 = (-2/7)(4) + b

-5 = -8/7 + b

[change -5 into -35/7]

-35/7 + 8/7 = b

b = -27/7

put 'm' and 'b' into y = mx + b

y = -2/7x - 27/7

Answer:

Forgot to turn the 7% into a 0.7... if you dont do that, then it will come out larger then it was supposed to be :)

Answer:

Sample response: Juanita did not change the 7% to the decimal 0.07. When she completes the problem as written, the interest will be greater than the money she borrowed.

Step-by-step explanation:

This is a sample response, be sure to change the wording up a bit.

Answer:

140 minutes

Step-by-step explanation:

First divide 21 by 3 to get 7

Then do 20*7 to get 140 :)

Answer:

43.50 or 43.5

Step-by-step explanation:

Answer:

y + 12 = -2/3(x - 5)

Answer:

B. 128

Step-by-step explanation:

so the sum of the interior angle is 180

180 - 76 is 104

since both sides are the same divide 104 with 2 to get 52

to find x = 180 - 52 = 128

Answer:

Remember a unit rate is a rate where the the value in the denominator (or second value in a x to y rate) is 1.

Step-by-step explanation:

Answer: 12

Step-by-step explanation: I did the math

Answer:

3 bucks

Step-by-step explanation:

Answer:

d=3

Step-by-step explanation:

if the whole thing equals 19, and you know that part of it is 10, that leaves the rest of it to be 9. the rest is divided into 3s, if you know the whole section is 9 then all you would have to do is divide 9 by 3 and that would get you 3

Answer:

C

Step-by-step explanation:

7x+5=180

7x= 175

x- 25

so 5(25)+4= 129

which is C

if my answer helps please mark as brainliest.

Answer:

They are already in order

70, 70, 79, 85, 96

the middle one is 79, meaning 79 is the median.

Step-by-step explanation:

Answer:

The width of the rectangular prism is 9 cm.

Step-by-step explanation:

From the formula of the volume of a bar [tex]V=whl[/tex] we see that [tex]w=\frac{V}{hl}=\frac{720}{8\cdot 10} = 9[/tex] cm.

Answer:

300 + 80 + 3

PLease mArk me brainliest

Answer:

(4 x X)-9

Step-by-step explanation:

I think this is correct pls tell me if this is wrong  

Hope this helps

The algebraic expression of Nine less than the product of four and a number is 4x-9.

An expression is combination of variables, numbers and operators.

The given sentence is 'Nine less than the product of four and a number.

We need to write this sentence as an algebraic expression.

We know that less than means there we used subtraction.

Product in the sentence means multiplication.

Let us consider x as the unknown number in the given expression.

the product of four and a number means four is multiplied with x. which is 4x.

Nine less than the product of four and a number

4x-9

Hence, the algebraic expression of Nine less than the product of four and a number is 4x-9.

To learn more on Expressions click:

https://brainly.com/question/14083225

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Answer:

Step-by-step explanation:

Sjaoa

The required cross-sectional area in a wireway is 12.8 In squared.

The percentage is defined as a ratio expressed as a fraction of 100.

Arithmetic operations can also be specified by subtracting, dividing, and multiplying built-in functions.

+ Addition operation: Adds values on either side of the operator.

For example 4 + 2 = 6

- Subtraction operation: Subtracts the right-hand operand from the left-hand operand.

for example 4 -2 = 2

We have been given an 8"×8"×6' long wireway the conductors can occupy.

Since the NEC permits 20% of the cross-sectional area in a wireway to be occupied by conductors

So the required cross-sectional area in a wireway is

⇒ 20 % of ( 8"×8" )

⇒ 0.20 × (64 )

⇒ 12.8 In squared

Thus, the required cross-sectional area in a wireway is 12.8 In squared.

Learn more about the percentages here:

brainly.com/question/24159063

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Answer:

Step-by-step explanation:

I = 180-152-7 = 21°

Law of Sines:

g = h·sinG/sinH ≅ 38.5 cm

i = h·sinI/sinH = 29.4 cm

Use Heron's Formula to calculate the area from the lengths of the sides.

semi-perimeter s = (g+h+i)/2 ≅ 39.0 cm

area = [tex]\sqrt{s(s-g)(s-h)(s-i)}[/tex]≅ 69 cm²

Step-by-step explanation:

a graphing calculator is more accurate then graphing by hand especially when you dont know the exactly were the point is

Answer:

a graphing calculator is just easier to graph the points than having to put every point on a piece of graph paper. the calculator also can tell you a bunch of other things like the domain or range or y intercept or x intercept. it’s just all along easier

Step-by-step explanation:

I have no clue if this is the sample response so watch out