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yan [13]
3 years ago
14

What's the equation for circumference

Mathematics
2 answers:
OleMash [197]3 years ago
8 0

If youknow the diameter of the circle, then
                                                                     Circumference = (π) x (Diameter).

If youknow the radius of the circle, then
                                                                     Circumference = (π/2) x(radius).

If you know the area of the circle, then
                                                                     Circumference= 2 √ (π A) .


otez555 [7]3 years ago
7 0
\sf d=diameter \\ R=radius \\ C=2 \pi R \\ 2 \pi=d \\ C=d*R
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Using this formula, how many sides does a polygon have if the sum of the interior angles is 1,260°? Round to the nearest whole n
nikdorinn [45]

Answer:

9 Sides

Step-by-step explanation:

According to the Question,

  • Given That, The sum of the interior angles(s), in an n-sided polygon can be determined using the formula s=180(n−2), where n is the number of sides

Therefore, The sides do a polygon have if the sum of the interior angles is 1,260°.

Put The Values in Formula, we get

1260=180(n−2)

n-2 = 7

n=9 (9 Sides)  

6 0
3 years ago
My questions are in the picture please help
Marrrta [24]

21.

So to solve for the value of a variable in an equation, you would need to isolate x on one side. The first thing you have to do is multiply 2 and (x + 7) together, which can be rewritten as 2(x) + 2(7). After multiplying, your equation would be: 2x+14+3x=12 , or A.

22.

So the rule with multiplying exponents with the same base is to add the exponents together, and the rule with dividing exponents with the same base is to subtract the exponents. Your equation will be simplified as such:

4^{(3+4)-9}\\ 4^{7-9}\\ 4^{-2}

Now the rule with converting negative exponents into fractions is x^{-m}=\frac{1}{x^m} . In this case, 4^-2 would turn into \frac{1}{4^2} , or C, which is your final answer.

6 0
3 years ago
Hi I need help with problems 14-16
Oksi-84 [34.3K]
16 is $32
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6 0
4 years ago
Find tan 0<br> 16<br> 20<br> 12<br> A.<br> 19<br> B.<br> D.<br> 20
lisov135 [29]

Answer:

Answer is 16/12

Step-by-step explanation:

Tan is Opposite by Adjacent. the opposite side is 16, adjacent side is 12 and hypotenuse is 20.

so O/A= 16/12

8 0
3 years ago
Read 2 more answers
Polly surveyed 850 teenagers to find out their favorite type of music. She found that 32% of the teenagers surveyed like hard ro
frosja888 [35]

Answer:

In explanation

Step-by-step explanation:

272 for part A because say you took a test out of 850 and you got a total of 272 of them right then you would of gotten a 32%

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I don't know the last one because if you had anything there only could get a 100%(im sorry for this one it's a little confusing.

Hope this helps have a great afternoon:)

7 0
2 years ago
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