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brilliants [131]
3 years ago
12

The experimental probability of rain in a certain town is 20 percent. In the next 45 days, how many days can one expect it to ra

in?
Mathematics
1 answer:
wlad13 [49]3 years ago
4 0

Answer:

9 days

Step-by-step explanation:

Experimental probability is the number of times an event occurs divided by the total number of trials of the event.

We know the experimental probability, based on past data, that rain will fall 20% chance.

So, one can expect, that in the next 45 days, rain will fall 20% of the days, according to our experimental probability.

First, we find decimal equivalent of 20%. We divide by 100:

20% = 20/100 = 0.2

Now we multiply this with the number of days:

0.2 * 45 = 9

Thus,

One can expect it to rain 9 days

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Inga [223]

Answer:

W = X in.

L = (3x - 6) in.

A = L*W = (3x-6)X = 45,

3x^2 - 6x = 45

3x(x-2) = 45,

x(x-2) = 15,

x^2 - 2x - 15 = 0

(x-5)(x+3) = 0,

x-5 = 0,

x = 5 in.

x+3 = 0,

x = -3.

Solution Set: x = 5, and x = -3.

Select + value of X:

x = 5

W = x = 5 in.

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Step-by-step explanation:

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2 years ago
Four different towns in the same state grew in size due to a revitalization effort. The population of town A grew from 22,000 to
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Answer:

Town C.

Step-by-step explanation:

Average change of population with time for town A = \frac{24,500 - 22,000}{4} = \frac{2,500}{4} = 625

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Average change of population with time for town C = \frac{22,000 - 18,000}{5} = \frac{4,000}{5} = 800

Average change of population with time for town D = \frac{34,100 - 32,000}{3} = \frac{2,100}{3} = 700

Town C had the greatest average change in population over time (800/yr).

8 0
3 years ago
What is 9x+10-2x+1 simplified?
Alexxandr [17]

Answer:

11+7x

Step-by-step explanation:

Simplifying

9x + 10 + -2x + 1

Reorder the terms:

10 + 1 + 9x + -2x

Combine like terms: 10 + 1 = 11

11 + 9x + -2x

Combine like terms: 9x + -2x = 7x

11 + 7x

Final result:

11 + 7x

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209.3 is the answer
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Step-by-step explanation:

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