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3 years ago

In 2000 there were approximately 27 million people 18-24 years old in the United States.

Mathematics

1 answer:

Semmy [17]3 years ago

5 0

I don’t know why I never think there’s that many people

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What is the area of triangle ABC?

Alja [10]

Answer:

200 sq units

Step-by-step explanation:

As you might know, 3 angles of a triangle adds up to 180*. Since you already know the angles are 60* there is one more 60*. So by this you know that all the sides are equal.

As the given states, one side is 20. So following the standard way to get the area of a triangle b*h/2; 20*20 = 400 / 2 = 200 sq units

8 0

3 years ago

One hundred sixty divided by one fourth equals what

Anna35 [415]

40 ......................

8 0

4 years ago

Lots of 40 components each are deemed unacceptable if they contain 3 or more defectives. The procedure for sampling a lot is to

MrRissso [65]

Answer:

The probability of founding exactly one defective item in the sample is P=0.275.

The mean and variance of defective components in the sample are:

$\mu=0.375\\\\\sigma^2=0.347$

Step-by-step explanation:

In the case we have a lot with 3 defectives components, the proportion of defectives is:

$p=3/40=0.075$

a) The number of defectives components in the 5-components sample will follow a binomial distribution B(5,0.075).

The probability of having one defective in the sample is:

$P(k=5)=\binom{5}{1}p^1(1-p)^4=5*0.075*0.925^4=0.275$

b) The mean and variance of defective components in the sample is:

$\mu=np=5*0.075=0.375\\\\\sigma^2=npq=5*0.075*0.925=0.347$

The Chebyschev's inequality established:

$P(|X-\mu|\geq k\sigma)\leq \frac{1}{k^2}$

6 0

3 years ago

Anyone know the answer to this question??

Tpy6a [65]

Tom will get £166
Ben will get £581

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3 years ago

In need of help with functions in Algebra 2! Thank you!

Damm [24]

Answer: The answer should be B

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3 years ago