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Answer:

c) N(.47, .09)

Step-by-step explanation:

Options to the question are "a) N(.30, .10), b) N(.30, .09). c) N(.47, .09), d) N(.47, .008), e) N(.30, .008)"

Pο = 47% = 0.47

n = 30

Mean = Pο = 0.47

S.D = Pο(1-Pο) / n

S.D = 0.47 * 0.53 / 30

S.D = 0.09

Thus, the percentage of sleeping statistics of students follows a Normal distribution with mean = 0.47 and S..D = 0.09

Answer:

The answer is C. 12 m2

Step-by-step explanation:

Hope this helps!! :) :) Please mark brainlliest.

Answer:

Angle A- Obtuse angle

Angle B- Right angle

Angle C- Reflex angle

Angle D- Reflex angle

Angle E- Acute angle

Angle A is Obtuse angle, Angle B is  Right angle, Angle C is Reflex angle, Angle D is Reflex angle and Angle E is Acute angle

An angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle.

Obtuse angle is any angle greater than 90°

A right angle is an angle measuring exactly 90°

A reflex angle is an angle that is more than 180 degrees and less than 360 degrees.

Any angle that measures greater than 0° and less than 90° is called an acute angle.

By the definitions of these the angles are

Angle A- Obtuse angle

Angle B- Right angle

Angle C- Reflex angle

Angle D- Reflex angle

Angle E- Acute angle

Hence, Angle A is Obtuse angle, Angle B is  Right angle, Angle C is Reflex angle, Angle D is Reflex angle and Angle E is Acute angle

To learn more on Angles click:

https://brainly.com/question/28451077

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Answer:

451

Step-by-step explanation:

7, 17, 30, 51, 85, 137, 212

Differences between              Difference between             Difference between

numbers in sequence             first differences                    second differences

17 - 7 = 10

30 - 17 = 13                                          3      

51 - 30 = 21                                          8                                                   5

85 - 51 = 34                                         13                                                  5

137 - 85 = 52                                       18                                                  5

212 - 137 = 75                                      23                                                 5

                          75 + 28 = 103

212 + 103 = 315                                  28                                                 5

                         103 + 33 = 136

315 + 136 = 451                                   33                                                5

Answer:

h = 12

surface area = 192

Step-by-step explanation:

Volume of this prism = 72

The base triangle has an area of B * h/2

The base = 6

The height in red = 2

Area = 1/2 * 6 * 2

Area = 6 ft^2

The volume = B * h = 72

The base = 6

6* h = 72

h = 72/6

h = 12

The surface area = 2 triangles + the rectangle face closest to us + the rectangular face whose width is 4 + rectangular face whose with is 5

The surface area = 2 * 6 + 6* 12 + 4*12 + 5 * 12

The surface area = 12 + 72 + 48 + 60

The surface area = 192 square feet.

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Explanation:

As you probably expect, the first number 80 refers to the percentage the first loan covers. If the house is say $100,000, then the first loan is $80,000 while the second loan is the remaining $20,000.

An 80/20 mortgage, or similar, will have two monthly payments because you are getting two mortgages bundled together. Usually you should pay a down payment, though it may likely depend on your credit history. Those with good credit will pay less or no down payment, compared to those with worse credit will have to pay more down payment. A good rule of thumb is that 20% of the home's value is made as down payment, though this isn't what the "20" in "80/20" is referring to.

An 80% down payment is extremely high and unreasonable. Not many people have that kind of money laying around. A similar story applies to a 20% interest rate which is incredibly large for a mortgage rate (typically they are in the single digits such as 3%).

Answer:

198

Step-by-step explanation:

due to order of eliminations u multiply 33 and 3 in both parantheses. then you add them together, you get 198.

Answer:

[tex]37.7in.[/tex]

Step-by-step explanation:

The circumference of a circle is: [tex]C=2\pi r[/tex]

However, the question wants us to use 3.14 instead of [tex]\pi[/tex].

We are given 12 inches as the diameter of the circle.

We want the radius, which is half of the diameter.

The radius of the circle is 6 inches.

Now that we have the radius, we plug and chug.

[tex]C=2*3.14*6in.\\C=6.28*6in.\\C=37.68in.\\[/tex]

However, the question wants us to round the answer to the nearest tenth.

Therefore, the new answer is: [tex]37.7in.[/tex]

I guess the answer is 6.66 or 13.33

Answer:

A. Her error was that she thought that they were surveying the whole town so 900 would be the sample.

B. The actual sample is 45.  

Step-by-step explanation:

The actual sample is 45 because 45 people out of the 900 visitors (population) were surveyed.

Answer:

176

Step-by-step explanation:

11ft x 16ft = 176ft

1ft x 176ft = 176ft

Answer:

The answer is "0.359"

Step-by-step explanation:

Throughout the given question, in the sample of 897 suspected offenders were identified, 322 have also been convicted. So, the estimate of the population of individuals caught and been on the ten most attractive lists is then estimated:

[tex]\to \frac{322}{897} = 0.3589743.. \approx 0.359[/tex]

Answer:

−14.2b+3.36d−216.05

Step-by-step explanation:

collect terms:(−14.2b−97.35)+((6.76d−3.4d)−118.7)

simplify: −14.2b−97.35+3.36d−118.7

terms: −14.2b+3.36d+(−97.35−118.7)

simplify: −14.2b+3.36d−216.05

Answer:

the answer is inconsistent hope this help :)

Step-by-step explanation:

Answer:

Step-by-step explanation:

672·0.5^(28/7) = 672·0.5⁴ = 42 grams

Answer:

She earned $12.60 per hour

Step-by-step explanation:

Pay was $412.65

Hours worked = 16.5 + 16.25 = 32.75 hrs

hourly rate = $$/hrs = 412.65/32.75  = 12.6

She earned $12.60 per hour

Answer:

acute angle : C

reflex angle : B

right angle : D

obtuse angle : A

Answer:

3

Step-by-step explanation:

2x + 2y = 4

dividing both sides by 2,we get

x + y = 4,which is the same line A

so this set of equations has infinitely many solutions as they intersect each other at infinite points i.e they overlap eachother

Answer:

Answer : - diagonals of rhombus are perpendicular. According to the property of rhombus. Diagonals of rhombus are perpendicular. In this question the triangle NQM is a right angled triangle and it is clear that it is right angled triangle because he mentioned angle MQN = 90°

Answer:

Pythagorean Theorum:

16ft

Step-by-step explanation:

pythagorean theorum states a^2+b^2=c^2

it only works for right triangles, c is the hypotenuse, a and b are the legs

so to find b we plug in the info we have!

7.8^2+b^2=17.8^2

next we simplify:

60.84+b^2= 316.84

subtract 60.84 from both sides to isolate the variable:

b^2=256

square root both sides

b=16

16ft is the answer

I hope this helps!

Answer:

exact form: r= 9/4

decimal form: r=2.25

mixed number form: r= 2 1/4

Step-by-step explanation:

Answer:

R=2 1/4 or 9/4

Step-by-step explanation:

You make the 4 1/2  a 4/24 so it equals 2 1/4

Than you subtract 4 2/4-2 1/4 to get 2 1/4

Hope this helps!!

Answer:

the original price of the shoes is $75

Step-by-step explanation:

x * 1.08 = 81

x = 81 / 1.08 = 75

75 * 1.08 = 81

Answer:

Step-by-step explanation:

lm=6x+3

mn=4x-17

ln=x+14

lm+mn>ln

6x+3+4x-17>x+14

10x-14>x+14

9x>28

x>28/9

mn+ln>lm

4x-17+x+14>6x+3

5x-3>6x+3

-x>6

x<-6

lm+ln>mn

6x+3+x+14>4x-17

7x+17>4x-17

3x>-34

x>-34/3

combining x<-6 or x>28/9

Answer:

7 >a

Step-by-step explanation:

-13+a>2a-20

-13+20 >2a-a

7 > a

Step-by-step explanation:

Given

4y = - 3x + 10

y = ( - 3x + 10 ) / 4

y = - 3/4 x + 10 / 4

y = - 3/4 x + 5 / 2

Comparing the given equation with y = mx +c Then

y - intercept (c) = 5/2

Hope it will help :)

Answer:

Step-by-step explanation:

it means that 7 goes into 9 one time, and its seven.

Answer:

2120.85 ft^3

Step-by-step explanation:

Given data

Height h= 27 ft

Radius r= 5 ft

The volume of a cylinder is given as

V= πr^2h

Substitue

V= 3.142*5^2*27

V= 3.142*25*27

V= 2120.85 ft^3

Hence the volume is 2120.85 ft^3

Answer:

3t+8

Step-by-step explanation:

Answer:

3t + 8

Step-by-step explanation:

Let the number be represented by

t

Now Interpreting the statement;

Three times a number;

3 × t

3t

Increased by eight;

3t+8

I hope this is helpful

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