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3 years ago

Janine wants a necklace 21 beads long how many blue beads and how many black beads

Mathematics

1 answer:

Kipish [7]3 years ago

3 0

She needs 11 blue beads and 11 black beads

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Write the number in 2 other forms (fraction , decimal or percent). Write the fractions in simplest form. #1 19/20 #2 9/16 Help p

ad-work [718]

19/20 in simplest form is 0.95
9/16 in simplest form is 0.5625

7 0

2 years ago

A sphere has a decimeter of 12 ft what is the volume of the sphere? Give the exact value in terms of

meriva

Answer: 904.78 cu. ft

Step-by-step explanation:

Volume of sphere = 4/3 pi r^3

Assuming 12 ft. is the diameter of the sphere.

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2 years ago

What is the radius of a circumference 56.5

Bas_tet [7]

8.992254284692088 is the radius I believe

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3 years ago

Find the value of x in the triangle shown below.

Sloan [31]

Answer:

33 is the answer

Step-by-step explanation:

6 0

3 years ago

A travelling salesman sells milkshake mixing machines and on average sells 8.9 machines per month. He needs to sell at least 3 m

Goshia [24]

Answer:

0.67% probability he will have to shut down after this month

Step-by-step explanation:

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

$P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}$

In which

x is the number of sucesses

e = 2.71828 is the Euler number

$\mu$ is the mean in the given time interval.

On average sells 8.9 machines per month.

So $\mu = 8.9$

Using the Poisson distribution, what is the probability he will have to shut down after this month

If he sells less than 3 machines.

$P(X < 3) = P(X = 0) + P(X = 1) + P(X = 2)$

$P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}$

$P(X = 0) = \frac{e^{-8.9}*8.9^{0}}{(0)!} = 0.0001$

$P(X = 1) = \frac{e^{-8.9}*8.9^{1}}{(1)!} = 0.0012$

$P(X = 2) = \frac{e^{-8.9}*8.9^{2}}{(2)!} = 0.0054$

$P(X < 3) = P(X = 0) + P(X = 1) + P(X = 2) = 0.0001 + 0.0012 + 0.0054 = 0.0067$

0.67% probability he will have to shut down after this month

5 0

2 years ago