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3 years ago

A copy machine can print 480 every 4 minutes a teacher printed 720 how long did it take

Mathematics

1 answer:

Nutka1998 [239]3 years ago

4 0

Answer:

6 minutes

Step-by-step explanation:

480/4 = 120 , 720/120 = 6 minutes Hope this helps

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3 years ago

Which function has a range of f(x)≥7

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3 years ago

In a given year, the population of Metro City is 7420, and the population is decreasing by 152 people per year. The population o

Anit [1.1K]

Answer:

The correct option is D.

Step-by-step explanation:

Let x denote the years.

The information provided is:

The population of Metro City is 7420.
The population is decreasing by 152 people per year.
The population of Smallville is consistently 1200 less than half of Metro City.

From the provided data derive the equation for the population of Smallville x years after as follows:

$Y = [\frac{1}{2}\cdot (7420-152x)]-1200$

The population of Smallville is 2282 after x years.

Compute the value of x as follows:

$2282= [\frac{1}{2}\cdot (7420-152x)]-1200$

$\frac{7420-152x}{2}=2282+1200\\\\7420-152x=3482\times 2\\\\152x=7420-6964\\\\152x=456\\\\x=3$

Thus, the time it will take for Smallville's population to reach 2282 is 3 years.

The correct option is D.

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3 years ago