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mixer [17]
2 years ago
14

One-eight of class graduated with a A average, 1/2 got a B, and the rest of the class had a C average. In a class of 800, how ma

ny had C average?
Mathematics
1 answer:
SpyIntel [72]2 years ago
8 0

Answer:

3/8

Step-by-step explanation:

1/8 got a A

1/2 got a B

1/2 is = to 4/8

4/8 + 1/8 = 5/8

1(8/8) - 5/8 = 3/8

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The population of a small town is decreasing exponentially at a rate of 14.3% each year. The current population is 9,400 people.
levacccp [35]

Answer:

After 2.9 years the town's tax status will change

The towns tax status change within the next 3 years

Step-by-step explanation:

The question below is

Will the towns tax status change within the next 3 years ?

Let

y -----> the population of a small town

t ----> the number of years

we have a exponential function of the form

y=a(b)^{t}

where

a is the initial value

b is the base

In this problem

a=9,400\ people

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substitute

y=9,400(0.857)^{t}

Remember that

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so

The inequality that represent this situation is

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(0.857)^{t}< 6,000/9,400

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(t)log(0.857)< log(6,000/9,400)

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so

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therefore

The answer is

Yes, the towns tax status change within the next 3 years

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The answer is c. I hope that helps
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