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Tanya [424]
2 years ago
7

The radius of a circle is 11.7 in. Find the circumference \textit{to the nearest tenth}to the nearest tenth.

Mathematics
2 answers:
hjlf2 years ago
7 0

Answer:

73.5

Step-by-step explanation:

circumference = 2πr , where r = radius

given radius = 11.7 so r = 11.7

C = 2πr

==> plug in r = 11.7

C = 2π(11.7)

==> multiply 2 and 11.7

C = 23.4π

==> multipl 23.4 and π

C = 73.5 ( rounded to the nearest tenth )

olga55 [171]2 years ago
6 0

R = 11.7

C = 2\pi r

Step-by-step:

Subsitute r with 11.7

C = 2\pi 11.7

Multiply 2 * 11.7

C = 23.4\pi

Multiply 23.4 * pi

C = 73.5 :)

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If f(x) = 6(9)^x then f(1/2) =?
Oksi-84 [34.3K]
F(x) = 6(9)^x

f(1/2) = 6(9)^(1/2)

f(1/2) = 6(9)^(0.5)

f(1/2) = 6*(9^0.5)               9^0.5 = √9 = +3 or -3.

f(1/2) = 6*3 = 18          or       6*-3 = -18

f(1/2) = 18   or   -18     

Hope this helps.
4 0
3 years ago
Suppose P( A) = 0.60, P( B) = 0.85, and A and B are independent. The probability of the complement of the event ( A and B) is: a
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For P(A):

P(A') = 1 - 0.6

P(A') = 0.4

For P(B):

P(B') = 1 - 0.85

P(B') = 0.15

To determine probability of A' and B':

P(A' and B') = P(A')*P(B')

P(A' and B') = 0.4*0.15

P(A' and B') = 0.06

<u>Probability of the complement of the event is 0.060</u>

5 0
3 years ago
Find the length of the third side. If necessary, write in simplest radical form.
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Answer:

2√6

Step-by-step explanation:

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4 0
3 years ago
How many solutions does the system of equations have?
sertanlavr [38]
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3 years ago
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A study of commuting times reports the travel times to work of a random sample of 1010 employed adults in Chicago. The mean is x
MrMuchimi

Answer:

standard error of the mean = 1.6960

Step-by-step explanation:

Given -

Mean (\overline{X}) = 53 minutes

Standard deviation ( s ) = 53.9 minutes

n = 1010

standard error of the mean  =  

\sigma _{\overline{X}}    =   \frac{s}{\sqrt{n}}

        = \frac{53.9}{\sqrt{1010}}

       =  1.6960

3 0
3 years ago
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