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weeeeeb [17]
3 years ago
10

10 The value of y varies directly with x. If x = 3, then y = 21. What is the value of x when

Mathematics
1 answer:
Virty [35]3 years ago
6 0

Answer:

x=15

Step-by-step explanation:

21/7=3

Therefore, to get x you have to divide y by (105/7)

you get 15

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II. We learned in Exercise 3.25 that about 70% of 18-20 year olds consumed alcoholic beverages in 2008. We now consider a random
Svetllana [295]

Answer:

You would expect for 35 people to have consumed alcoholic beverages.

Step-by-step explanation:

For each person, there are only two possible outcomes. Either they consumed alcoholic beverages, or they did not. The probability of a person having consumed alcoholic beverage is independent of any other person. This means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

Probability of exactly x successes on n repeated trials, with p probability.

The expected value of the binomial distribution is:

E(X) = np

We learned in Exercise 3.25 that about 70% of 18-20 year olds consumed alcoholic beverages in 2008.

This means that p = 0.7

We now consider a random sample of fifty 18-20 year olds.

This means that n = 50

How many people would you expect to have consumed alcoholic beverages

E(X) = np = 50*0.7 = 35

You would expect for 35 people to have consumed alcoholic beverages.

7 0
2 years ago
Write the sum using summation notation, assuming the suggested pattern continues. 8 - 40 + 200 - 1000 +
e-lub [12.9K]

Answer:

+ something 32

Step-by-step explanation:

5 0
3 years ago
Which describes a transformation using rotation?
alexandr402 [8]
B.

Good luck with your studies!
3 0
2 years ago
15(−22.38−10.12) HELP PLEASE!!!
kompoz [17]
The answer to this question is -345.82
In a fraction it would be -17291/50
5 0
3 years ago
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Mr. Aleman is the treasurer for his local scouting troop. He makes a budget for the troop.He suggests that they spend 1/2 of the
kari74 [83]

Answer:

Answer: XII CCCXLV

Step-by-step explanation:

To convert 12,345 to Roman Numerals you have to take them apart into place values (ones, tens, hundreds).

Ten Thousands=10,000=X

Thousands=2,000=MM

Hundreds=300=CCC

Tens=40=XL

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Step-by-step explanation:

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3 years ago
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