Mathematics High School

what is the circumference of a circle witha radius of 4 in​

Answers

Answer 1

25.12 in or 8π

Step-by-step explanation:

Since you didn't specify whether or not to leave pi or to make it be 3.14, I did both.

The formula for the circumference of a circle is...

[tex]C=2\pi r[/tex]

So...

[tex]C=2*3.14*4[/tex]

C = 25.12 in

If you want to leave pi...

[tex]C=2*\pi *4[/tex]

C = 8π

Related Questions

Please solve this with an explanation. will mark as brainiest.

Answers

Answer:

[tex]236cm^2[/tex]

Step-by-step explanation:

[tex]A=2(wl+hl+hw)=2*(5*2+3*2+3*5)=62cm^2[/tex]

[tex]A=2(wl+hl+hw)=2*(3*5+3*5+3*3)=78cm^2[/tex]

[tex]A=2(wl+hl+hw)=2*(3*5+3*5+3*3)=78cm^2[/tex]

[tex]A=2(wl+hl+hw)=2*(3*3+3*3+3*3)=54cm^2[/tex]

[tex]62+78+78+54=272cm^2[/tex]

Given the letters from the word: RESPONSIBILITY, what is the probability of choosing one letter and getting an "I"?

Answers

letter of i's/number of letters in the word

3/14

what is the answer please im in a hery

Answers

Answer:

Factor [tex]12a + 6b : 6(2a + b)[/tex]

Step-by-step explanation:

[tex]12a+6b[/tex]

Rewrite [tex]12[/tex] as [tex]2 * 6[/tex]:

[tex]=2\cdot \:6a+6b[/tex]

Factor out common term [tex]6[/tex]:

[tex]=6\left(2a+b\right)[/tex]

Hope I helped. If so, may I get brainliest and a thanks?

Thank you, Have a good day! =)

Solve for c.

–4c − 9 = –3c

c =

Answers

Look at the attached picture

Hope it will help you

Good luck on your assignment

2. Write a quadratic function with zeros at 6 and -2.

Answers

Answer:

f(x) = x^2 - 4x - 12

Step-by-step explanation:

If 6 is a zero, (x - 6) is a factor.  Likewise, if -2 is a zero, (x + 2) is a factor.

Multiplying these two factors together, we get:

f(x) = x^2 - 4x - 12

In a direct variation, y = 12 when x = 6. Write a direct variation equation that shows the relationship between x and y.

Answers

Answer:

y=2x

Step-by-step explanation:

Y=kx

12=k6

12 divided by 6 to get 2

and 2=k

Please help!
You pick a card at random. Without putting the first card back, you pick a second card at random.

What is the probability of picking a 3 and then picking a 3?

Simplify your answer and write it as a fraction or whole number.

Answers

I would say you have a probability of 1/4 to pick a 3 in the first round and 1/3 in the second round
1/4 plus 1/3 = 7/12

the button on ernestos shirt has a diameter of 8 millimeters.what is the buttons radius

Answers

Answer:

4 mm

Step-by-step explanation:

The radius is half the diameter, so in this case the radius of each button is 4 mm.

Answer:

The radius would be 4 millimetres

Step-by-step explanation:

The radius is the length from one side to the centre of the circle.

The diameter is the length from one side to another.

To work out the radius you would simply divide the diameter of 8 by 2, this gives you 4 millimetres. This is because the radius is half of the diameter.

1) Divide 8 by 2.

[tex]8/2=4 mm[/tex]

2(q–8)< – 10 solve for q

Answers

Answer:

[tex] = q < 3[/tex]

Step-by-step explanation:

[tex]2(q - 8) < - 10 \\ 2q - 16 < - 10 \\ 2q < - 10 + 16 \\ 2q < 6 \\ \frac{2q}{2} < \frac{6}{2} \\ q < 3[/tex]

hope this helps

brainliest appreciated

good luck! have a nice day!

Find the number if:
4.5% of it is 23% of 4

Answers

Answer:

20.4

Step-by-step explanation:

A corporation produces packages of paper clips. the number of clips per package varies, as indicated below for a sample of 20 packages. 48 49 51 52 48 50 51 50 49 47 52 53 50 49 52 51 53 48 49 50 create a histogram. how many packages contain between 48 and 52 clips (inclusive) per package

Answers

Answer:

- The histogram of this distribution is presented in the attached image to this answer.

- The number of packages that contain between 48 and 52 clips (inclusive) per package = 17

Step-by-step explanation:

To create an histogram, we need to properly present the right solutions to angry mob.

The number of clubs per package is presented as thus

48 49 51 52 48 50 51 50 49 47 52 53 50 49 52 51 53 48 49 50

In an organized home, the data is reset to the number of clubs per passport and corresponding video is done

x | f

47 | 1

48 | 3

49 | 4

50 | 4

51 | 3

52 | 3

53 | 2

The histogram of this distribution is presented in the attached image to this answer.

-  The number of packages that contain between 48 and 52 clips (inclusive) per package

From the data table, it is evidently 3+4+4+3+3 = 17

Hope this Helps!!!

In this nuclear reaction equation, oxygen decays to form nitrogen. Which equation correctly describes
this decay?
O 150 N + e
o 150+ e TN
o 150 N+
o 150 → N+

Answers

Answer:

A. 150 N + e

Step-by-step explanation:

Im smart pls mark brainliest.

One of the altitudes of the parallelogram shown is the square root of 22.5. What is the other altitude?

Answers

Answer:

Step-by-step explanation:

Caroline divides by 8, then adds 9 to get an answer of 12. What was the original number?

Answers

Answer:

Original number = 24

Step-by-step explanation:

Look at the picture

What is the measure of angle DBA?

Answers

Answer:

DBA =110 degree

Step-by-step explanation:

angle DBA is central angle

central angle = arc angle = 110 degree

Answer:110

Step-by-step explanation:

What is the equation in slope intercept form of the line that has a slope of -3 and passes through the point (0,5)

Answers

y=-3x+5

Since the slope is -3, you write -3x since x labels the slope. The point is on the y axis giving us the y intercept which is 5.

6 x - 16.7 equals what please help

Answers

Answer:

- 100.2

Step-by-step explanation:

6 x(-16.7)

6 x [tex]\frac{-167}{10}[/tex]

6 x(-167) = - 1002

-1002/10 = - 100.2

The two prisms below are similar. What is the value of x?
30
A. 3
B. 9
C. 1
D. 30
SUBMIT

Answers

i think its D. 30 :)

A bucket contains 10 balls numbered as follows: 1, 2, 2,3,3,3,3,4,4,5. A
single ball is randomly chosen from the bucket. What is the probability of
drawing a ball numbered 3?

Answers

Answer:

4/10 or 40%

Step-by-step explanation:

there are 4 balls with the number 3. 4 balls out of 10. 4/10.

Answer:

1000000000000000000000000000000000000000000000%

Step-by-step explanation:

idk I cant count sooooo....

Find the probability that a point in the figure chosen at random is in the
shaded kite. *Remember, the are of a kite is found by one half of diagonal
1 times diagonal 2. *
A)1/3
B)1/4
C)3/4
D)1/2

Answers

Answer:

Correct option: D) 1/2

Step-by-step explanation:

First we need to find the area of the kite and the area of the rectangle.

The diagonals of the kite are 16 and 12, as they are parallel to the sides of the rectangle.

So the area of the kite is A1 = (1/2) * 16 * 12 = 96

The area of the rectagle is the product of the sides, so A2 = 16 * 12 = 192

Now, to find the probability of a random point being inside the kite, we just need to divide the area of the kite by the area of the rectangle:

Probability = A1 / A2 = 96 / 192 = 1/2

Correct option: D)

Only 1/9 enrolled students in a school were absent. There were 4512 students present. How many students are enrolled in the school?

Answers

Answer:

5076.

Step-by-step explanation:

Let x be the number enrolled, then:

x - 1/9 x = 4512

8/9x = 4512

x = 4512 * 9/8

x = 5076.

After solving a quadratic equation using the quadratic formula, what do the 2 solutions mean?

Answers

Answer:

those are your two answers

Step-by-step explanation:

Circle P has a circumference of approximately 75 inches.
What is the approximate length of the radius, r? Use 3.14
for te. Round to the nearest inch.
12 inches
24 inches
38 inches
46 inches

Answers

Answer:

12 inches

Step-by-step explanation:

2(3.14)r=75

r = 11.94 ~ 12 inches

Answer:

The answer is A

Step-by-step explanation:

Name all factors of x3 – 3x2 – 10x.

Answers


The answer is: x(x-5)(x+2)
x(x^2-3x-10)
x(x-5)(x+2)

Solve the equation 4x² +7x-2=0.​

Answers

Answer:

x+11.5

Step-by-step explanation:

4x² +7x-2=0

16x+7x-2=0

23x-2=0

      +2  +2

23x=2

23x/2

x= 11.5

I hope these help.

Express x^2-5x+8 in the form (x-a)^2+b

Answers

Answer:

x^2 - 5x + 8 = (x - 5/2)^2 + 7/4

Step-by-step explanation:

(x - a)^2 + b = x^2 - 2ax + a^2 + b

equate to your quadratic :

x^2 - 5x + 8 = x^2 - 2ax + (a^2 + b)

equating coefficients (ignoring x^2 as the coefficient is 1 for both)

for x :

-5 = -2a --> a = 5/2

for x^(0) : 8 = a^2 + b , note a = 5/2

thus,

8 = (5/2)^2 + b

8 = 25/4 + b

b = 8 - 25/4 = 32/4 - 25/4 = (32 - 25)/4 = 7/4

hence a = 5/2 , b = 7/4

thus,

x^2 - 5x + 8 = (x - 5/2)^2 + 7/4

What is 84/100 simplifyed

Answers

Answer:

0.84

Step-by-step explanation:

84/100=0.84

hope its right

Answer:

21/25

Step-by-step explanation:

84/100 divide by 4= 21/25

what is the probability of spinning a number less than 3 or 6

Answers

Answer:

I'm glad you asked!

Step-by-step explanation:

The probability would be 0.3333 .When we convert it into a number we get 26 or 13.

A box contains 7 yellow, 5 blue, and 4 red balls. Three balls are drawn at random. Find the probability that:
a)
All three balls are the same color
c)
Two balls are yellow and one is blue
d)
All three balls are different colors

Answers

Answer:

a) 7/80 = 0.0875

b) 3/16 = 0.1875

c) 1/4 = 0.2500

Step-by-step explanation:

There are a total of 16 balls.  3 are selected.  There are ₁₆C₃ possible combinations.

a) If all 3 balls are the same color, they are either all yellow OR all blue OR all red.

The number of ways of choosing 3 yellow balls from 7 is ₇C₃.

The number of ways of choosing 3 blue balls from 5 is ₅C₃.

The number of ways of choosing 3 red balls from 4 is ₄C₃.

The total probability is:

P = (₇C₃ + ₅C₃ + ₄C₃) / ₁₆C₃

P = (35 + 10 + 4) / 560

P = 49 / 560

P = 7 / 80

P = 0.0875

b) The number of ways of choosing 2 yellow balls from 7 is ₇C₂.

The number of ways of choosing 1 blue ball from 5 is ₅C₁.

The probability of both is:

P = ₇C₂ ₅C₁ / ₁₆C₃

P = 21 × 5 / 560

P = 105 / 560

P = 3 / 16

P = 0.1875

c) If all 3 balls are different colors, then there is exactly 1 yellow, 1 blue, and 1 red.

The number of ways of choosing 1 yellow ball from 7 is ₇C₁.

The number of ways of choosing 1 blue ball from 5 is ₅C₁.

The number of ways of choosing 1 red ball from 4 is ₄C₁.

The probability of all events is:

P = ₇C₁ ₅C₁ ₄C₁ / ₁₆C₃

P = 7 × 5 × 4 / 560

P = 140 / 560

P = 1 / 4

P = 0.2500

A dolphin is swimming at a constant speed. It travels 30 meters every 5 seconds. What is the slope of the line that shows the relationship between x, time in seconds, and y, the distance in meters traveled by the dolphin

Answers

Answer:

6 meters per 1 second or 6m/s

Step-by-step explanation:

slope is rise/run or change in y/change in x

in this case y=30, x=5 so slope = 30/5= 6

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