The population of Miami-Dade County in Florida in 2010 was 2, 496, 435 and the land area was 1, 898 square miles. The population increased by 7.9% in 2015. Part 1: To the nearest whole number, find the population density, in people per square mile, for Miami- Dade County in 2015

Answers

Answer 1

Answer:

The populationdensityof the city which is the ratio of populationsizeand the landareais 1419 people per square mile.

The initial population = 2496435
The percentage increase in population = 7.9%

Land Area = 1898 mi²

The population of the city on 2015 can be calculated thus :

(1 + percent increase) × initial population

(1 + 0.079) × 2496435 = 2693653.365 people

The population of a city is calculated using the relation :

Population density = Population / Land Area

Population density = 2693653.365/1898

Population density = 1419.21

Therefore, the populationdensityis 1419people per square mile.

Learn more: brainly.com/question/18796573

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If the hypotenuse of a right triangle is 20 cm and one of the legs is 16 cm, how long is the other leg? 2.8
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Answers

Because this is a triangle and we know that we can use the Pythagorean Theorem to find the hypotenuse we just plug in the numbers. But because you have the hypotenuse already you will subtract the leg from the hypotenuse.

A^2+B^2=C^
16^2+B^2=20^2
256+B^2=400 subtract 256 from both sides
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B=12

The second leg is 12 cm long. Your answer is B, the second answer.

suppose y varies directly with x, and y=8 when x=-6. What direction variation equation relates x and y? What is the value of y when x=-2

Answers

B. y = –1.33x; 2.67

Help on questions 11 and 15 Add and simplify if possible

Answers

$(16+x)/(x^3)+(7-4x)/(x^3)=(16+x+7-4x)/(x^3)=(23-3x)/(x^3)\n\n======================================\n\n(5)/(t-1)+(3)/(t)=(5t)/(t(t-1))+(3(t-1))/(t(t-1))=(5t+3t-3)/(t^2-t)=(8t-3)/(t^2-t)$

$(16+x)/(x^(3) ) + (7-4x)/( x^(3) ) \n 16+x+7-4x = 23-3x \n (23 -3x)/( x^(3) )$
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
$(5)/(t-1) +(3)/(t) \n \n (5t+(t-1)(3))/((t-1)(t)) \n \n (5t+3t-3)/( t^(2)-t ) \n \n (8t-3)/( t^(2)-t )$

A cheetah can run at top speed for only about 20 seconds. If an antelope is too far away for a cheetah to catch it in 20 seconds, the antelope is probably safe. Your friend claims an antelope running 60 feet per second will not be safe if the cheetah running at 90 feet per second is 650 feet behind it. Is your friend correct?

Answers

Your friend is not correct.

It takes the cheetah Approximately 21.67 seconds to run at 90 ft/s to reach the moving antelope.

Given that, a cheetah can run at top speed for only about 20 seconds and the top speed of a cheetah is 90 feet per second.

What is the formula to find the speed of an object?

The formula to find the speed of an object is Speed = Distance / Time.

From the given question in 20 seconds cheetah will cover a distance of:

20 × 90 = 1800 feet

In 20 seconds cheetah will cover a distance of 1800 feet.

It is given that the antelope runs 60 feet per sec

That means in 20 seconds antelope will cover a distance of:

20 × 60 = 1200 feet

In 20 seconds antelope will cover a distance of 1200 feet.

Now add the distance ran initially, because the antelope was ahead of the cheetah from 650 feet.

1200 feet + 650 feet = 1850 feet

But the maximum distance cheetah can cover is 1850 feet. Thus the antelope is still 50 ft ahead of the cheetah.

Therefore, the antelope is probably safe.

Hence, your friend is not correct.

The speed of a cheetah is 30 feet per second more than antelope.

Cheetahs need to cover 50 feet to catch antelope.

So, 50/30 =1.67 seconds

20 seconds + 1.67 second = 21.67 seconds

Therefore, it takes the cheetah approximately 21.67 seconds to run at 90 ft/s to reach the moving antelope.

To learn more about the speed visit:

brainly.com/question/7359669.

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21.7 Seconds Your Friend is Incorrect 90t=650+X 60t=x 90t=60t×650 -60. -60 30t+650 ÷30 ÷ 30 21.7 T= time

Numero que multiplicado por si mismo de 50

Answers

El número que multiplicado por sí mismo da 50 es aproximadamente 7,071.

Answer:

7,071

Step-by-step explanation:

At the corner store, Nico bought 5 pencils for $0.10 each and 3 pens for $0.50 each. He used t to represent the sales tax, in dollars, that he also paid. He paid a total of $2.12, including tax. Nico wrote this equation to represent what he paid. What errors, if any, did he make? 5(0.10) + 3(0.50) - t = 2.12

Answers

he subtracted the tax insted of adding it .

Answer:

He should have added t instead of substracting t

Step-by-step explanation:

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