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3 years ago

11

Shaelin travels 60 miles per hour with her family for 45 minutes. What is the total distance that her family travels?

1 answer:

Triss [41]3 years ago

3 0

45 miles because 45 minutes is 3/4 of an hour. So to find how many miles they travelled at 60 miles per hour, you need to multiply 60 by 3/4. One way to do that is to divide 60 by 4 which is equal to 15 then multiply 15 by 3 which is equal to 45 miles.

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1.Simplify the following Expression<br> a. 5y^2+ 3y – 13 + 6x – 3y + 6y^2

insens350 [35]

Simplified expression is 11y² + 6x - 13

Step-by-step explanation:

Step 1: Simplify 5y² + 3y - 13 + 6x - 3y + 6y²

5y² + 3y - 13 + 6x - 3y + 6y² = 11y² + 6x - 13

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A hamster is 2 1/2 inches long a rabbit is 3 1/2 times as long as a hamster how long is the rabbit

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2 years ago

Circle towns limit form a perfectly circular shape that has a population of 20000 in the population density of 480 people per sq

Alex

Answer:

$D =\frac{P}{\pi X^2}$

And solving for the radius we got:

$X = \sqrt{\frac{P}{\pi D}}$

And replacing the data given we got:

$X = \sqrt{\frac{480 \frac{people}{km^2}}{\pi *20000 people}}= 0.0874Km$

And this value converted to meters is $X = 87.40 m$

Step-by-step explanation:

For this case we know the population size $P = 20000$ and we also know the population density $D = 480 \frac{people}{km^2}$

We can assume that the area is a circle. We also know that the formula for the population density is given by:

$D= \frac{P}{A}$

Where P represent the number of people and A the area. Since we are assuming a circle then the area is given by:

$A = \pi X^2$

With X the radius of the circle

And then the populationd density become:

$D =\frac{P}{\pi X^2}$

And solving for the radius we got:

$X = \sqrt{\frac{P}{\pi D}}$

And replacing the data given we got:

$X = \sqrt{\frac{480 \frac{people}{km^2}}{\pi *20000 people}}= 0.0874Km$

And this value converted to meters is $X = 87.40 m$

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