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Art [367]
3 years ago
10

The population of a country in 2009 was 642000 and it was increased by 5 % in 2010.

Mathematics
1 answer:
aksik [14]3 years ago
8 0

Answer:

i) 32100 people

ii) 674100

iii) 5%

Step-by-step explanation:

The population in 2009 was : 642,000

The percent increase was by : 5%

This means the population in 2010 will be :

105/100 * 642000 = 674,100

i) Increase in population is ;  674,100 - 642,000 = 32100 people

ii) The population in 2010 was : 674,100

iii) Population of 2009 = 642000

   Population of 2010 = 674,100

   Increase in population = 674,100 - 642000 = 32100

   Percent increase = increase/ original population * 100

   Percent of increase = 32100/642000 * 100 = 5%

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If $1,000 is loaned for 5 months at 6 % annual rate, how much interest is earned?
In-s [12.5K]

Answer:

Interest earned is $25.2

Step-by-step explanation:

The formula to find simple interest is:

I = P₀rt

Where

I = interest rate

P₀ = Principal amount

r = interest rate

t= time

5 months = 5/12 years = 0.42 years

I = 1000* 6/100*0.42

I = 1000*0.06*0.42

I = 60*0.42

I = 25.2

Interest earned is $25.2

5 0
2 years ago
The diameter d in inches of a rope required to lift a weight of w tons is given by the function d = 10w/ π . How much weight can
Ilia_Sergeevich [38]

Answer:

Option D) 1.26 tons

Step-by-step explanation:

we have

d=\frac{10w}{\pi}

where

d is the diameter of a rope in inches

w is the weight in tons

we have

d=2(2)=4\ in ----> the diameter is two times the radius

substitute the value of d and solve for w

4=\frac{10w}{\pi}

w=\frac{4\pi}{10}=0.4\pi\ tons

assume

\pi =3.14

0.4(3.14)=1.26\ tons

7 0
3 years ago
Read 2 more answers
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Stells [14]

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7 0
2 years ago
Rachel earned $85.25 for working 6 1 4 hours. How much does Rachel earn per hour?
GaryK [48]

Answer:

Rachel earns per hour is $ 13.64 .

Step-by-step explanation:

As given

Rachel earned $85.25 for working 6 \frac{1}{4} hours.

i.e

Rachel earned $85.25 for working \frac{25}{4} hours.

Now calculate earning of Rachel for 1 hour .

Rachel\ earning\ for\ one\ hour = \frac{Total\ earning}{Total\ time}

Rachel\ earning\ for\ one\ hour = \frac{85.25}{\frac{25}{4}}

Rachel\ earning\ for\ one\ hour = \frac{85.25\times 4}{25}

Rachel\ earning\ for\ one\ hour = \frac{341}{25}

Rachel\ earning\ for\ one\ hour = \$ 13.64

Therefore Rachel earns per hour is $ 13.64 .

7 0
2 years ago
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2,776,714 rounded to the greatest place value is?How many zeros are in the rounded number?The estimated speed of light using a p
Simora [160]

Answer:

3,000,000. 6 Zeros. 898,752,432,640

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Step-by-step explanation:

7 0
3 years ago
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