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Ede4ka [16]
3 years ago
9

How can you check your work when you are finding arc measures?

Mathematics
1 answer:
Murrr4er [49]3 years ago
6 0

After you measured it you can check if the measurement is correct by knowing radius and arc length using formula,

\alpha=\dfrac{l}{r}.

Hope this helps.

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¿Cuál es el ángulo complementario de 78° 7' 54''? (Indique la respuesta en grados)
Readme [11.4K]

Answer:

 

Step-by-step explanation:

7 0
3 years ago
Which of the following is equivalent to 3 (small) 4?<br><br> 7<br> 12<br> 64<br> 81
anygoal [31]
Do you mean 3^4?

If you mean this^ the answer would be 81.

4 0
3 years ago
According to an​ almanac, 60​% of adult smokers started smoking before turning 18 years old. ​(a) compute the mean and standard
larisa [96]
The given problem describes a binomial distribution with p = 60% = 0.6. Given that there are 400 trials, i.e. n = 400.

a.) The mean is given by:

\mu=np=400\times0.6=240

The standard deviation is given by:

\sigma=\sqrt{npq} \\  \\ =\sqrt{np(1-p)} \\  \\ =\sqrt{400(0.6)(0.4)} \\  \\ =\sqrt{96}=9.80


b.)  The mean means that in an experiment of 400 adult smokers, we expect on the average to get about 240 smokers who started smoking before turning 18 years.


c.) It would be unusual to observe <span>340 smokers who started smoking before turning 18 years old in a random sample of 400 adult​ smokers because 340 is far greater than the mean of the distribution.
340 is greater than 3 standard deviations from the mean of the distribution.</span>
5 0
3 years ago
the mean average distance that jack runs in his last 10 runs is 5.7 miles. work out the distance that he would need to make this
ziro4ka [17]

Answer:

9 miles

Step-by-step explanation:

mean is calculated as

mean = \frac{sum}{count} , then

\frac{sum}{10} = 5.7 ( multiply both sides by 10 )

sum = 57

let x be the distance he needs to cover so mean is 6 , that is

\frac{sum+x}{11} = 6 ( multiply both sides by 11 )

sum + x = 66 , that is

57 + x = 66 ( subtract 57 from both sides )

x = 9

That is he would have to run 9 miles

3 0
2 years ago
Pleasssssssss help 5<br> points ​
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What is the situation from the problem
7 0
3 years ago
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