I NEED HELP . I'm having trouble trying to figure out how to answer this can anyone help please?

Mathematics

1 answer:

klio [65]3 years ago

7 0

Answer:

what is it?

Step-by-step explanation:

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An experiment consists of drawing a marble out of a bag, observing the color, and then placing it back in the bag. Suppose the e

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The experimental data suggest that

$\mathbb P(\text{red})\approx\dfrac{38}{75}$
$\mathbb P(\text{blue})\approx\dfrac{23}{75}$
$\mathbb P(\text{green})\approx\dfrac{11}{75}$
$\mathbb P(\text{yellow})\approx\dfrac3{75}$

Because the marble is replaced after being drawn, and so the number of marbles of a given color remains the same, the event of drawing any given color is independent of what was drawn before. So

$\mathbb P(\text{2 consecutive yellows})\approx\dfrac3{75}\cdot\dfrac3{75}=\dfrac1{625}$

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Evaluate 3x + 7 for x = 5.

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Answer:

Step-by-step explanation:

If x = 5, then plug 5 in for x .

3(5) + 7

15 + 7 = 22

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Identify as a direct variation, inverse variation or neither. The number of tons of coal burned by an old coal burning locomotiv

pochemuha

Answer: it is a direct variation.

Justification:

In a direct variation the variables are related by a proportionality constant in this way:

y = k x

Tthan means that the value of y is always the product of a constant times the value of x.

The situation discribed for the coal may be written as:
number of tons of coal burned: c

number of hours: h

⇒ c = k × h

Which is that you can calcualte the number of tons of coal burned at any time, once you know the proportionality constant k.

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Answer:

16 units

Step-by-step explanation:

4+6+8=18

18-2=16

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