Mathematics High School

A circle has diameter 12. What's the circumference?

a
24π
b
12π
c
36π
d
144π

Answers

Answer 1

Answer:

b. 12π

Step-by-step explanation:

C= 2πr

R= D/2= 12/2= 6

C= 2x3.14x6

2x6= 12

C= 12π

Answer 2
Solution

Given :-

diameter of circle = 12

Then,

Radius will be circle= 12/2 = 6

Explanation

Using Formula

★Circumference of circle = 2πr

Keep Value

==> Circumference of circle = 2π × 6

==> Circumference of circle = 12π

Hence

your answer will be option number b.

Related Questions

A middle school took all of its 6th grade students on a field trip to see a symphony at a theater that has 2000 seats. The students filled 320 of the seats in the theater. What percentage of the seats in the theater were filled by the 6th graders on the trip?

Answers

Answer:

16.8%

Step-by-step explanation:

Answer:

16 percent of the seats (16%)

Step-by-step explanation:

There are 2000 seats in total but 320 of them are being taken by the students so 320seats out of or divided by the total 2000. 320/2000 is 0.16 and 0.16 as a percent is 16%

Name the angles that are adjacent to

Answers

Answer:

angle k and n are adjacent to angle j

Are these proportional? And I need to show work sooo for example on the first question we did in class we wrote down

-3/1
-6/2=-3/1
-9/3=3/1

I hope I’m not asking for too much but I want to start off my trimester strongly.

Answers

Answer:

Step-by-step explanation:

If y is proportional to x,

y ∝ x

y = kx

k = [tex]\frac{y}{x}[/tex]

Here, k = Proportionality constant

For y = -8 and x = -4,

k = [tex]\frac{-8}{-4}[/tex]

k = 2

For y = -4 and x = -2

k = [tex]\frac{-4}{-2}[/tex]

k = 2

For all values of x and y proportionality constant = 2.

For x = 0 and y = 0,

If we graph a line passing through these points, the line will pass through the origin (No y-intercept).

And we know that any line passing through the origin represents the proportional relation between x and y variables.

Therefore, given table represents the proportional relation.

Zoom in on the photo:)
True or False? When you are dividing 2 numbers, you have to check to see
if there is a decimal in the divisor. If there is a decimal in the divisor, you
have to multiply that number by a power of ten to move the decimal to the
right. You have to move the decimal the same number of times to the right
in the dividend too. Then you can divide your numbers.

Answers

Answer:

true, have a great day and i hope that helped :)

The measure of angle A is equal to x degrees. The measure of angle B is equal to 95 degrees. Angles A and B are supplementary. Find m angle A

Answers

Answer:

95°

Step-by-step explanation:

Since both angles are supplementary, they have the same degree.

If angle B = 95°, angle A is also = 95°

A material that does not conduct heat well can be used as __________.
a heat source
b thermometer
c fuel
d insulation

Answers

a material that doesn’t conduct well would be referred to as an insulator because it keeps the heat/electricity in.

10 pounds of onions cost $100 how many pounds of onions can get with $150

Answers

Answer:

15

Step-by-step explanation:

$100 / 10 pounds = $10 / pound

$150 / 10 dollars  = 15 pounds of onions

you can get 15 pounds of onions with $150

Type the slope of the line PARALLEL to y = 6X -3 *
Your answer

Answers

Answer:

6

Step-by-step explanation:

Look for the x, the number before x tells you the slope

Nine is which percent of 25?
A. 16%
B. 27%
c. 36%
D. 225%
E 270%

Answers

Answer:

36%

Step-by-step explanation:

I don't know if you want the explanation or not.

How would you complete this table also it has to show the work

Answers

Answer:

cweds

Step-by-step explanation:

hey can you state what's wrong in the given solution.

=》
[tex]0 = 0[/tex]

we know, zero is always equal to zero

=》
[tex]16 - 16 = 20 - 20[/tex]
because, 16 - 16 = 0
and 20 - 20 = 0

=》

taking 4 as common from 16 - 16 and 5 as common from 20 - 20
[tex]4(4 - 4) = 5(4 - 4)[/tex]
now dividing both sides by
(4 - 4)

=》
[tex] \frac{4(4 - 4)}{(4 - 4)} = \frac{5(4 - 4)}{(4 - 4)} [/tex]
=》
[tex]4 = 5[/tex]
because, (4 - 4) in denominators of both sides cancels out (4 - 4) in numerator of both sides.

=》
[tex]2 + 2 = 5[/tex]
we know, 4 = 2 + 2 , so plugging (2 + 2) in place of 4

​

Answers

Answer:

i also guess 2+2=4 not 5 ╮(╯▽╰)╭

A four-sided figure has 4 congruent sides,
Which plane figure best fits this description?

A)kite
B)quadrilateral
C)rectangle
D)Thombus
E)square

Answers

Answer is E I think let me cheat

Answer:

Step-by-step explanation:

D Thombus

Find the radius of a circle which has a sector area of 9 pi whose central angle is 90 degrees.

Answers

Answer:360/90 = 4

Total area = 4 times that of the sector.

Step-by-step explanation:

A 90 deg sector has 1/4 the area of the circle.

Total circle area = 4*9pi = 36pi

Answer:

The area is A= 3/2π

Step-by-step explanation:

The area of whole circle is:

A

c

=

π

×

r

2

=

9

π

The central angle

60

o

is

1

6

of a full angle, so the area of the sector is:

A

s

=

1

6

A

c

=

1

6

×

9

π

=

9

6

π

=

3

2

π

Can someone help me with my homework, please?

Answers

Answer:

6 is 45° 1 is 45° x=10 hope this helps

Answer:

1) 45. Since it is congruent/corresponding to angle 7, which is 45 degrees.

2) 135. Because a straight line is 180 degrees, I substracted 45 from 180, getting 135 degrees, the measure of angle 1.

3) x = 20. Look at the work below.

Step-by-step explanation:

180 - 45 = 135

____________________________________________________________

5x + 35 = 135

      -35    -35

5x = 100

divide by 5

x = 20

If one of the roots of the equation x²- 4x + k=0exceeds the other by 2, then find the roots and determine the value of k

Answers

Answer:

roots: 1 and 3

k = 3

Step-by-step explanation:

2 roots: p and p+2

(x-p) (x-p-2) = x² - 4x + k

x² -2px -2x + p² + 2p = x² - 2 (p+1)x + (p² + 2p) = x² -4x + k

-2 (p+1) = -4

p+1 = 2

p = 1   ... root 1

p' = 1+2 = 3   ... root 2

k = p² + 2p = 3

check: (x-1) (x-3) = x² - 4x + 3 = x² - 4x + k

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Answers

Answer:

Carlos i think because he got menus faster then Melissa

Step-by-step explanation:

Melissa, she did 5 more than delivers than Carlos i am pretty sure

Solve the equation for d.

0.2d+3.14=5.06

What is the value of d that correctly solves the equation?

Enter your answer as a number with one decimal place, like this: 4.2

Do not round your answer.

Answers

Answer:

d=9.6

Step-by-step explanation:

0.2d+3.14=5.06

                - 3.14

_________________

                   1.92

0.2d=1.92

1.92/0.2= 9.6

a student finshed 8 of her quiz problems in class. if the ratio of problem she finished to problems she still had left was 4:1 how many home work problems did she have total​

Answers

Answer:

10

Step-by-step explanation:

I can't really explain this well but, when you double 4 you get 8 (which is how many she did), so since you doubled 4 you also have to double 1 which would be 2. Then add 8 and 2 and you get 10

10000000000000000000000000000000000pppppppppppp

−
2
x
+
y
=
−
1
2
x
+
5
y
=
7

Answers

Answer:

I got you the answer is X = 14 and Y = 35

The daily advertising revenue (in dollars) for a local newspaper is given by the function R(t) = -18t2 + 720t – 103, where t is number of years that the paper has been in production. What is the daily advertising revenue after the paper has been in business for 15 years?

Answers

Answer:

6647

Step-by-step explanation:

The computation of the advertising revenue for 15 years is shown below:

Given that

r(t) = -18t^2 + 720t - 103

where

t = number of years = 15

now put the value of t in the above equation

= -18(15)^2 + 720(15) - 103

= -4050 + 10,800 - 103

= 6647

Jerry's Catering provided food and drinks for 54 guests at the New
Year's eve party. Jerry charges $25 per for food and $6 per drink for
each guest. How much money did Jerry's Catering make for this
party?

Answers

he should have made $1,674! hope this helps!!

The ratio of teachers to students at Pikeville College is 1: 20. If there are 3,000 students at the college,
how many teachers are there?

Answers

There are 150 teachers because 20 * 150 is 3000.

What method of solving a quadratic equation is shown​ here? A set of expressions shows the solution of the quadratic equation shown on line 1. Line 2 shows an equivalent expression of two factors. Line 3 show two separate equations with each factor set equal to zero. Line four show two solutions for the value of x. A. Quadratic formula B. Factoring C. Grouping

Answers

Answer:

Factoring

Step-by-step explanation:

When we are solving a quadratic equation by the factorization method, each factor is set as being equal to zero.

The solution of each bracket of factors gives the root of the quadratic equation.

For example;

x2 + 16 = 10x

We now have;

x2 - 10x + 16  = 0

x2 - 8x - 2x + 16 = 0

x(x - 8) -2(x - 8) = 0

(x-2) (x-8) = 0

(x-2) = 0

Then x = 2

Or

(x-8) = 0

x = 8

Hence;

x = 2 or x= 8

A good estimate of the age of the Earth is 4.54 × 10 9 years. What is this number written in standard form?

Answers

4.54 x 10 ^ 9 = 4540000000 (7 zeros) hope this helps

Find the simple interest: Principal: $1750 Interest Rate: 2% Time: 9 years

Answers

Answer:

2,065.00

Step-by-step explanation:

Answer:

315

Step-by-step explanation:

To find simple interest you multiply all your numbers together.

But before you do anything you need to convert your interest rate into a decimal (you move the decimal two times to the left or divide it by 100)

Therefore , you will multiply 1750 * .02 * 9

which equals 315

pls help me 10 points

Answers

Answer: Approximately 20 miles per gallon

Step-by-step explanation:

The line of best fit is an approximate average. In order to predict the fuel efficiency you just estimate the place where x = 4800 and see what the y value of the line is for that point. In this case it's around 20 miles per gallon.

Please I need the answer which one is it

Answers

Answer:

33

Step-by-step explanation:

33

Look at this graph what is the y- intercept?

Answers

The y intercept is 6

Complete the equation to show how to find the sum of 7/10 and 20/100. Write your answers in the boxes. HALP MEH PLS

Answers

Answer:

9/10

Step-by-step explanation:

To solve this you need a common denominator, here we'll make it 10, leaving 7/10 and simplifying 20/100 by dividing both the 20 and 100 by 10 to get our common denominator of 10. Now we have 7/10 + 2/10 which is 9/10.

Find (-3/7) divided (-1 1/14)

Answers

Answer:

2/5

Step-by-step explanation:

first, we convert the mixed fractions to improper fractions,

[tex]-1\frac{1}{14}=\frac{15}{14}[/tex]

so then we find what [tex]-\frac{3}{7}[/tex][tex]\div[/tex][tex]-\frac{15}{14}[/tex]

[tex]-\frac{3}{7}[/tex][tex]\div[/tex][tex]-\frac{15}{14}[/tex] = [tex]-\frac{3}{7} * -\frac{14}{15}[/tex]

and that equals [tex]\frac{3*14}{7*15}[/tex] , which equals [tex]\frac{42}{105}[/tex]. We can simplify that to 2/5

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