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makkiz [27]
3 years ago
6

What is the approximate circumference of a circle with radius 3?

Mathematics
2 answers:
mart [117]3 years ago
6 0
I’m guessing C, but I’m not for sure
malfutka [58]3 years ago
6 0

Answer:

C

Step-by-step explanation: Plug the radius into the formula 2\pir so first you multiply the radius by 2, giving you 6\pi, next, multiply 6 by pi(3.14) and you will end up with 18.849, then you round up and end up with 18.85

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If the probability of an events is 2/7 what must be the probability of its compliments
monitta

Answer:

The probability of its compliments = 0.7143 = 5/7

Step-by-step explanation:

The probability of an events = P= 2/7 = 0.2857

The probability of its compliments = 1-p = 1-0.2857 = 0.7143 = 5/7

6 0
3 years ago
The height, in inches, of a randomly chosen American woman is a normal random variable with mean μ = 64 and variance 2 = 7.84. (
Schach [20]

Answer:

Step-by-step explanation:

Given that the height in  inches, of a randomly chosen American woman is a normal random variable with mean μ = 64 and variance 2 = 7.84.

X is N(64, 2.8)

Or Z = \frac{x-64}{2.8}

a)  the probability that the height of a randomly chosen woman is between 59.8 and 68.2 inches.

=P(59.8

b) P(X\geq 59)\\= P(X\geq -1.78)\\ \\=0.9625

c) For 4 women to be height 260 inches is equivalent to

4x will be normal with mean (64*4) and std dev (2.8*4)

4x is N(266, 11.2)

P(4x>260)= \\P(Z\geq -0.53571)\\=0.7054

d) Z is N(0,1)

E(Z19) = P(Z>19)\\= 0.000

since normal distribution is maximum only between 3 std deviations form the mean on either side.

3 0
3 years ago
What’s the slope of x+2y=-8?
mash [69]

Answer:

- 1/2

Step-by-step explanation:

We use the slope-intercept form to figure out our slope.

y = mx + b

Get y alone:

x + 2y = -8

2y = -x - 8

y = -x/2 - 4

Since m is the slope in y = mx + b, we can see that -1/2 is in the place of m, therefore our slope is -1/2

7 0
2 years ago
What is the equation of the line with a slope of 4/3 and y-intercept of -6
skelet666 [1.2K]

Answer:

y=4/3x-6

Step-by-step explanation:

y=mx+b

m= 4/3

b= -6


6 0
3 years ago
PLEASE HELP!!!!!!!!!!!!!!!!
lakkis [162]

Answer:

false i think? and true

Step-by-step explanation:


8 0
3 years ago
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