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ycow [4]
3 years ago
14

What is the radius of a circle whose circumference is 16π? A. 32π B. 16 C. 8 π D. 8

Mathematics
1 answer:
Paladinen [302]3 years ago
3 0

Answer:

D

Step-by-step explanation:

Remark

The circumference of a circle is 2 * pi * r

Given

The circumference (C) = 16 * pi

Solution

2 pi r = 16 pi                                       Divide by 2*pi

r = 16 pi / (2*pi)

r = 8

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Allisa [31]

Answer:

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Step-by-step explanation:

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8 0
3 years ago
A die with six faces has the number 1 painted on three of its faces, the number 2 painted on 2 of its faces, and number 3 on one
salantis [7]

Answer:

a) S = {1, 2, 3}

b) P(odd number) = \frac{2}{3}

c) No

d) Yes

Step-by-step explanation:

a) The sample space is the set of all possible outcomes. By definition, the elements of a set should not be repeated. Hence, the sample space S = {1, 2, 3}

However, the sample is not equiprobable because each element has different probabilities.

b) P(odd number) = \frac{number of odd digits}{number of faces}=\frac{4}{6}=\frac{2}{3}

Note that the odd numbers are 1 (on three faces) and 3 (on one face).

c) The fact the die has been biased does not change the possible outcomes. It only changes the probability of getting any given number.

d) Because the 3-face has been loaded, this probability changes. In fact, it is calculated thus:

Let's assume the probability for 1 or 2 is x. Then that of 3 is 2x(because it is twice the others). The sum of probabilities must be 1.

x+x+x+x+x+2x=1

7x=1

x=\frac{1}{7}

P(odd number) = 3\timesProb(1) + Prob(3)

= 3\times\frac{1}{7}+\frac{2}{7} = \frac{5}{7}

7 0
3 years ago
If Charlie liked dogs, and Macy's hat was green, how fast was the car, that the dog's dad was driving?
Likurg_2 [28]

Answer: The car wasn't going fast at all because dogs can't drive

Step-by-step explanation:

4 0
3 years ago
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hoa [83]

Answer:

5/8

Step-by-step explanation:

15/3=5 and 24/3=8

3 0
3 years ago
Read 2 more answers
Mr. Anderson wrote (7x9)x10 the power of 3 on the board. What is the value of that expression?
PIT_PIT [208]

Answer:

(7x9)x10 the power of 3  is 63,000




4 0
3 years ago
Read 2 more answers
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