About what percentage of the area under the normal dis-
tribution curve falls within 1 standard deviation above
and below the mean? 2 standard deviations? 3 standard
deviations?

Answers

Answer 1

Answer :

hope this help !

Step-by-step explanation:

Under this rule, 68% of the data falls within one standard deviation, 95% percent within two standard deviations, and 99.7% within three standard deviations from the mean.


Related Questions

370 is 125% of what number?

Answers

Answer:

125/100 x N = 370

x 100 x 100

125n = 37,000 (since your multiplying what you got to the variable)

Divide by 125

N = 296

A restaurant bill came to food total of $50 you want to leave a 20% tip for the server how much is the total bill

Answers

Answer:

20 percent of 50 is 10

Step-by-step explanation:

I THINK THATS IT I DONT REALLY KNOW

Answer:

$50×.20=10 50+10=$60 the total is $60

Mariana is making a large pot of pasta. She mixes together
5
1
8
pounds of pasta,
6
pounds of sauce, and
4
7
8
pounds of onions.

To find out how many
1
2
pound servings can she make, which two equations would you need?

A.
5
1
8
+
4
7
8
+
6
=
16
B.
5
1
8
+
4
7
8

6
=
4
C.
4
÷
1
2
=
8
D.
16
÷
1
2
=
32
E.
16
×
1
2
=
8

Answers

Answer:

516137

Step-by-step explanation:

21412

Answer:

42

Step-by-step explanation:

polynomials multiple choice math question ?
pls help

Answers

Answer:

The answer is D. Variable. The "letters after the numbers" are always variables. A coefficient is the number that the variable is being multiplied by. An exponent would be something like this: [tex]x^{2} \\[/tex] with the 2 being the exponent. A binomial is an algebraic expression of the sum or the difference of two terms.

WILL GIVE BRAINLIEST PLZZZZZZZZZZZ HELPPPPPPPP

which of the following are underrepresented populations
1. Men
2. religious minorities
3. women
4. Ethnic minorities

Answers

Im really sure its 3 or C, women. Please don't give me brainliest if its wrong! Good luck!

Find the perimeter and area of the figure.

Answers

Answer:

perimeter of the figure =32 units

area of the figure=56 units²

Mhanifa please help!
Question 1: Find the sum of the measures of the interior angles of a heptagon.
Question 2: The sum of the measures of the interior angles of a convex polygon is 3060°. Classify the polygon by the number of sides.
Question 3: Find the measure of each interior and exterior angle of a regular 30-gon.

Answers

Answer:

Sum of interior angles of a regular polygon:

S = (n - 2)*180°Question 1:

Heptagon has 7 sides

Sum of interior angles:

S = (7 - 2)*180° = 5*180° = 900°

Question 2:

S = 3060°, n = ?

(n - 2)*180° = 3060°n - 2 = 3060°/180°n - 2 = 17n = 19

19-sided polygon (Enneadecagon)

Question 3:  

Let each angle be x

30x = (30 - 2)*180° x = (30 - 2)*6°x = 28*6x = 168°


Share £60 in the ratio 1:4

Answers

Answer:

s=5

v=2

Step-by-step explanation:

On a flight from San Diego to Baltimore, 18 of the 156 seats are empty. What is the ratio of filled seats to empty seats on the flight?

Answers

Answer:

138/18

23:3

Step-by-step explanation:

There are 18 empty seats so we can already fill out the right side of our ratio (yes I said our. Oh the communism!)  with 18, to make :18.

We also know that there are 156 seats, so we will subtract 18 to find the amount of the filled seats, which is 156-18 = 138

138 seats are filled.

We can put the 138 on the left side of the ratio which is now

138:18

We now divide both sides by 2 to try to get the simplified form.

138/2 = 69

18/2 = 9

69:9

Now we divide both sides by 3.

69/3 = 23

9/3 = 3

23:3

23 and 3 are both prime numbers meaning that there are no factors to divide or simplify with anymore except for the same number and 1.

The answer is 23:3

pls help ill give brianliest lol ..

Answers

C.

It is just random stuff.

Answer:

B

Step-by-step explanation:

Two of the same x values with different y values

2x - 3 = - x + 9
Help me

Answers

Answer:

x = 4

Step-by-step explanation:

here's your solution

=> 2x - 3 = - x + 9

=>. 2x + x = 9 + 3

=> 3x = 12

=>. x= 12/3

=>. x= 4

hope it helps

Answer: x=4

Step-by-step explanation:

How to solve x:

First you would collect like terms. Like terms are terms that have the same variable and powers. So, you would add x to both sides so it would be 3x-3=9 then you would add 3 to both sides so it would be 3x=12 then after that you would divide that by 3 which gives you x=4.

So x would be 4.

Side notes:

You do the inverse of what it tells you to “undo” the equation.

find the value of 105 squred using bionomial expansion using (a+b) squred=a squred+2ab + b squred
the first one who answer it will get the brainliest .pls answer asap!!!!

Answers

Answer:

11025

Step-by-step explanation:

to understand thisyou need to know about: algebralet's solve:[tex] \sf rewrite \: 105 \: as \: 100 + 5 : \\ \sf (100 + 5 {)}^{2} [/tex][tex] \sf use \: (a + b {)}^{2} = {a}^{2} + 2ab + {b}^{2} \: to \: simplify : \\ \sf {100}^{2} + 2.100.5 + {5}^{2} [/tex][tex] \sf simplify \: squres : \\ \sf 10000 + 2.100.5 + 25[/tex][tex] \sf simplify \: multipication : \\ \sf10000 + 1000 + 25[/tex][tex] \sf simplify \: addition : \\ \sf \: 11025[/tex]

Which has a mass of about 10 kilograms?

Watermelon
Pencil
Car
Apple

Answers

Answer:

watermelon ..........................................

Answer: watermelon

Step-by-step explanation:

they usually weigh 9-11kg

an apple or pencil is less than 10kg, and a car is way more than 10kg

The base of the triangular pyramid shown is an equilateral triangle vóth sides measuring 6 yards and a height of
5.2 yards. Each lateral face is congruent and has a height of 8 yards.
What is the surface area of the pyramid?
15.6 square yards
72 square yards
87.6 square yards
144 square yards

Answers

Answer:15.6

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

A ladder is inclined at only 23 degrees against the wall what the height of the ladder reaches up the wall

Answers

Step-by-step explanation:

To determine what the height of the ladder reaches up the wall we need to know the height of ladder which is not provided in the question.

So if I assume the height of ladder to be 10ft( just a general assumption)

Then, inclined ladder, wall and distance been the bottom of the ladder and wall will form a right angle triangle.

where height of ladder will be hypotenuse, height of the ladder reaches up the wall will be perpendicular and distance been the bottom of the ladder and wall will be base.

Since, A ladder is inclined at 23 degrees against the wall

⇒ height of the ladder reaches up the wall  = Height of ladder×sin23°

= 10ft × sin23° = 3.9073 ft

ASAP HELP PLEASE PLEASE

Answers

Answer:

2079

Step-by-step explanation:

is the correct answer 2079

h(x)=12x+3 evaluate h(6)

Answers

Answer:

75

Step-by-step explanation:

Substitute 6 in for x:

12(6)+3 –––Multiply 12 by 6

72 + 3 –––Add 72 and 3

75 –––Your answer

You run 3 miles in 24 minutes. What is your average rate of speed in miles per minute?​

Answers

Answer:

8

Step-by-step explanation:

A jar contains only nickels and dimes. The jar contains a total of 21 coins. The value of all the coins is 1.65$. How many nickels and dimes are in the jar?

Answers

12 Dimes and 9 Nickels. 12 dimes would equal $1.20 and 9 nickels would equal $0.45. $1.20 + $0.45 = $1.65
Hope this helps!

The lengths of the sides of a triangle are given below. Classify the triangle as acute, obtuse, or right.
7, 9, 3

A. Acute Triangle


B. Obtuse Triangle


C. Right Triangle

Answers

Answer:

B. Obtuse Triangle

Step-by-step explanation:

Use Pythagorean to identify if the triangle is right:

9² = 7² + 3²81 = 58

We see the triangle is not right and the difference of the squares tells us the angle opposite to side with measure of 9 is greater than 90°.

It means the triangle is obtuse.

Correct choice is B

.Andrea needs a new air conditioning system for her house. An air conditioner needs to be big enough to cool a house, but it will wear out quickly if it is too big. Calculate the volume of the house pictured below to help Andrea choose the right air conditioner.

Answers

Answer:29,400 ft^3

Step-by-step explanation:

Whoever gets this correct gets brain, 5 stars and a thanks! An explanation of it would be amazing! Tysm!

Answers

Answer:

It's D

Step-by-step explanation:

First:

Convert any mixed numbers to fractions.

Then your initial equation becomes:

25/2 ÷ 3/4

Applying the fractions formula for division,

= 25 x 4

2 x 3

=100/6

Simplifying 100/6, the answer is

= 16 2/3

Calculate the radius of a circle if its area is 153.9cm2​

Answers

Answer:

7

Step-by-step explanation:

Answer:

6.999

Step-by-step explanation:

153.9 = pie*r^2

48.98=r^2

R=6.999

Hey! I really need help with this please ASAP!! HELP SOON!!

Answers

about 14.2 have a great day
So it looks like pythagorean theorem if so that would be your answer

please answer if you know

Answers

Answer: (1,-5)

Step-by-step explanation:

Substitute x and y with (1,-5).

-5=1-6.

Hope this helps :)

Write an inequality to represent the situation: A theater rents their space for $250 per night. If the company charges $8 per ticket, then what is the least number of tickets that must be sold in order to make a profit? PLEASE HELP! This is due tomorrow!

Answers

Answer: 32 tickets

Step-by-step explanation:

Since the theater rents their space for $250 per night and the company charges $8 per ticket, the least number of tickets that must be sold in order to make a profit will be:

= ($250/8)

= 31 1/4

The number gotten above is the number that'll bring about an Equilibrium. To make a profit the company must sell at least 32 tickets

Sketch the graph of y= (x - 2)2 - 16, then select the graph that corresponds
to your sketch.
RO
-20
20
-20
20
.
6
5
-20
20
-5
.8
A. Graph A
B. Graph B
C. Graph C
D. Graph D

Answers

Answer:

B B

Step-by-step explanation:

its B that the correct answer

Triangle ABC has the angle measures shown. Measure of angle A = (2 x) degrees. Measure of angle B = (3 x) degrees. Measure of angle C = (4 x) degrees. Which statement is true about the angles? Measure of angle A = 20 degrees Measure of angle B = 60 degrees Angle A and Angle B are complementary Measure of angle A + measure of angle C = 100 degrees

Answers

Step-by-step explanation:

step 1. 2x + 3x + 4x = 180° internal triangle angles add up to 180°

step 2. 9x = 180 or x = 20

step 3. <A = 2x = 2(20) = 40°

step 4. <B = 3x = 3(20) = 60°

step 5. <C = 4x = 4(20) = 80°.

Answer:

I think its A correct me if wrong

step-by-step explanation:

HEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEELP​

Answers

2.) 10 donuts for 11.50

Answer:

10 donuts for $11.50

Step-by-step explanation:

11.50 divided by 10 = 1.15

That means that for this deal, each donut costs $1.15

15 divided by 12 = 1.25

That means that each donut costs $1.25

$1.15 is less than $1.25, so the answer is 10 donuts for $11.50

help please and thanks

Answers

answer:
i’m not sure but i’m pretty sure that it’s
b and c
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