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3 years ago

9

I13 babies are born to every 1000 person each year.If the population was 58,400,000 in 2000 , how many babies were born that yea

r?

1 answer:

alina1380 [7]3 years ago

7 0

Number of babies=(58,400,000/1,000)*113=58,400*113=?

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Answer:

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2 years ago

Please help me with this homework

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A rectangular parking lot must have a perimeter of 440 feet and an area of at least 8000 square feet. Describe the possible leng

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Answer:

The possible parking lengths are 45.96 feet and 174.031 feet

Step-by-step explanation:

Let x be the length of rectangular plot and y be the breadth of rectangular plot

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2(x+y)=440

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y=220-x

We are also given that an area of at least 8000 square feet.

So, $xy \leq 8000$

So, $x(220-x) \leq 8000$

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So, $220x-x^2 = 8000\\-x^2+220x-8000=0$

General quadratic equation : $ax^2+bx+c=0$

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$x=\frac{-220 \pm \sqrt{220^2-4(-1)(-8000)}}{2(-1)}\\x=\frac{-220 + \sqrt{220^2-4(-1)(-8000)}}{2(-1)} , \frac{-220 - \sqrt{220^2-4(-1)(-8000)}}{2(-1)}\\x=45.96,174.031$

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2 years ago

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Every number of years 365 and I have been trying to

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2 years ago

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Answer:

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Step-by-step explanation:

The height of the ball at a time of 3.1 seconds is given by Charlize's equation as ...

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The well is about 151 feet deep.

_____

<em>Comment on this measurement</em>

The speed of sound is sufficiently slow that it will make a difference in the time Charlize records. She would get a more accurate measurement if she were able to <em>see</em> the ball hit bottom.

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2 years ago