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FrozenT [24]
3 years ago
11

The radius of a circle is 10. Using π, which equation expresses the ratio of the circumference of the circle to the circle's dia

meter?
Mathematics
2 answers:
aleksley [76]3 years ago
7 0

The ratio of circumference to diameter is independent of the radius.



Defining C=circumference, r=radius, D=diameter =  2r



Circumference = C = 2 π r = π D  


=> 


ratio of circumference / diameter


= C/D = π

Lapatulllka [165]3 years ago
7 0

Answer:

\frac{C}{20}=\pi

Step-by-step explanation:

It is given that radius of a circle is 10.

We need to write an equation which expresses the ratio of the circumference of the circle to the circle's diameter using π.

The circumference of the circle is

C=2\pi r

where, r is the radius of the circle.

Substitute r=10 in the above formula.

C=2\pi (10)

C=20\pi

Divide both sides by 20.

\frac{C}{20}=\frac{20\pi}{20}

\frac{C}{20}=\pi

Therefore, required equation is \frac{C}{20}=\pi.

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gtnhenbr [62]

Answer:

It's the second one I believe, because it's not a straight line, and nearly all functions have curved lines

Step-by-step explanation:

4 0
3 years ago
The Maine Public Health Department reported that there have been 90 flu cases requiring hospitalization in Portland, ME (populat
Zigmanuir [339]

Answer:

The prevalence rate of flu cases requiring hospitalization thus far in 2018 is:

= 0.13%

Step-by-step explanation:

a) Data and Calculations:

Population of Portland, ME = 70,000

Number of flu cases requiring hospitalization on February 1st, 2018 = 43

Number of flu cases requiring hospitalization on July 4th, 2018 = 90

The prevalence rate of flu cases requiring hospitalization thus far in 2018 = 90/70,000 * 100 = 0.13%

b) The prevalence rate represents the proportion of the population of Portland, ME, who have the flu at the time that the Maine Public Health Department reported the number of flu cases requiring hospitalization on July 4th, 2018.

3 0
3 years ago
66,681 rounded to the nearest ten thousand??
grandymaker [24]

Hey there! I'm happy to help!

This number is sixty six thousand six hundred eighty one. This means that our ten thousandths place is the first 6.

We look to the right place to see if it is 5 or bigger. It is also six.

Therefore we bump the ten thousands place up 1 to 7 and we make everything else 0, giving us 70,000.

Have a wonderful day! :D

7 0
2 years ago
Plz HELP!!!!!!<br> i have know idea ........................
Paraphin [41]

Answer:

x=-2

Step-by-step explanation:

Becuz you are very dumb.

3 0
3 years ago
Day
seropon [69]
What is this supposed to mean? Is it a chart??
3 0
3 years ago
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