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MA_775_DIABLO [31]
1 year ago
12

Compare the doubling times found with the approximate and exact doubling time formulas. Then use the exact doubling time formula

to answer the given question. A nation of 200 million people is growing at a rate of 9% per year. What will its population be in 15 years
Mathematics
1 answer:
g100num [7]1 year ago
6 0

The population after 15 years become according to the doubling time is 470000000.

According to the statement

We have given that the nation of 200 million people is growing at a rate of 9% per year.And we have to find that the What will its population be in 15 years.

So, For this purpose, we know that the

The doubling time is the time it takes for a population to double in size/value. It is applied to population growth etc.

So,

Population of nation is 200 million and growing at a rate of 9% per year.

So, 9% of the population is

Percentage population = 9/100*200,000,000

Percentage population = 9* 200,000,0

Percentage population = 1800,000,0.

It means 18000000 number of population is increased per year.

So, The total population increased in 15 years is  15*18000000

The total population increased in 15 years is  270000000.

The population after 15 years is 270000000 + 200,000,000

The population after 15 years is 470000000.

So, The population after 15 years become according to the doubling time is 470000000.

Learn more about doubling time here

brainly.com/question/16407547

#SPJ4

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One maid can clean the house four times faster than another. Working together they can clean the entire house in 4 hours. How lo
stich3 [128]

<u>5 hours</u><u> long would it take the </u><u>faster </u><u>maid cleaning alone.</u>

What is a linear equation in math?

  • A linear equation only has one or two variables.
  • No variable in a linear equation is raised to a power greater than 1 or used as the denominator of a fraction.
  • When you find pairs of values that make a linear equation true and plot those pairs on a coordinate grid, all of the points lie on the same line.

Suppose, time taken by faster maid be x , hours.

So, time taken by slower maid ,

 x_{2} = 4x_{1}        ( 4 time faster maid )

Now, time taken by both of the  made together is given by ,

( \frac{x_{1}x_{2}  }{x_{1} + x_{2} } )

\frac{x_{1}(4x_{1} ) }{x_{1} + 4x_{1} }  = 4 hours

\frac{4x_{1} }{5}  = 4 hours

x_{1} = 5 hours     which is the time required by faster maid.

Learn more about linear equation

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8 0
1 year ago
Can someone please help me with this
dusya [7]

Answer:

Yes

Step-by-step explanation:

Because I can assist you hit my inbox

8 0
3 years ago
Read 2 more answers
the perimeter of a rectangular swimming pool is 30 meters the width of the pool is 3 meters less than its length find the width
shtirl [24]
6*2=12
9*2=18
18+12=30

the answer is 6
3 0
3 years ago
Read 2 more answers
Tickets to a show cost different for seniors, children, and adults. Adult tickets are twice as much as senior tickets. Two senio
aleksklad [387]
A = 2s
c + 2s = 17 .....c + a = 17 (I subbed in "a" for 2s)
2c + a = 24

c + a = 17 .....(-1)
2c + a = 24
---------------
-c -a = -17...result of multiplying by -1
2c + a = 24
---------------add
c = 7

2c + a = 24
2(7) + a = 24
14 + a = 24
a = 24 - 14
a = 10

a = 2s
10 = 2s
10/2 = s
5 = s

so, senior tickets (s) cost $ 5,  adult tickets (a) cost $ 10, and child tickets (c) cost $ 7

1 adult ticket + 1 senior ticket would cost $ 15
5 0
3 years ago
Read 2 more answers
What is the value of the expression |x| + |y + z| when x = –6, y = –3, and z = –5?
mart [117]
|-6| + |-3 + (-5)|

6 + |-8|

6 + 8

14
8 0
4 years ago
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