To find the circumference of a circle the length of the diameter is used.

Mathematics

2 answers:

lutik1710 [3]3 years ago

5 0

Answer:

circumference of a circle: pi*d

d is also 2r (2 times the radius)

dangina [55]3 years ago

3 0

There are several ways to find the circumference of a circle. It depends on what information you have. Some information helps, some doesn't.

You can calculate the circumference if you know the circle's radius, or its equation, or its diameter, or the length of a piece of it and the central angle formed by the piece.

On the other hand, if you know the circle's color, or its eccentricity, those won't help at all.

You use whatever you've got.

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Roman55 [17]

Answer:

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3 years ago

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Last year 190 student attended the spring dance and the total cost was 1250. Two years ago 175 people attended and the total cos

kondor19780726 [428]

Unit cost of a ticket = Income from ticket sales / number of tickets sold:

$1250
--------------- = $6.58 per ticket
190 tickets

Again:

$1175
--------------- = $6.71
175 tickets

While ticket prices do change (usually increase) from year to year, it's unusual to see such a situation here.

Don't have any guidelines by which to determine the "fixed cost of a ticket".

If we use the cost of a ticket of 2 years ago ($6.58/ticket), then the income from the sale of 225 tickets this year would be ($6.58/ticket)(225 tickets), or $1480.50.

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3 years ago

What is the solution to this equation 2/3x+1=1/6×-7

Alika [10]

Answer:

A . x= -16

Step-by-step explanation:

$\\\frac{2}{3}x+1=\frac{1}{6}x-7\\\\\mathrm{Subtract\:}1\mathrm{\:from\:both\:sides}\\\\\frac{2}{3}x+1-1=\frac{1}{6}x-7-1\\\\\frac{2}{3}x=\frac{1}{6}x-8\\\\\mathrm{Subtract\:}\frac{1}{6}x\mathrm{\:from\:both\:sides}\\\\\frac{2}{3}x-\frac{1}{6}x=\frac{1}{6}x-8-\frac{1}{6}x\\\\= \frac{1}{2}x=-8\\\\\mathrm{Multiply\:both\:sides\:by\:2}\\\\2\times \frac{1}{2}x=2\left(-8\right)\\\\x=-16$