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The populations of six countries are listed in this chart. Arrange the population of the six countries from least to greatest. Explain how you solved this problem.
 

https://snag.gy/4FdRYT.jpg

 

Would it be

United kingdom

Germany

Japan

Bangladesh

Nigeria

Brazil

 Aug 28, 2018
 #1
avatar+3994 
+1

We can convert each of the decimals, to numbers by moving the decimal point:

 

So, Japan=12.718*10^7=12718*10^4=127,180,000

 

Brazil: 2.0*10^8=2*10^8=200,000,000 ( Most Populated)

 

Germany: 80.619*10^6=80619*10^3=80, 619,000

 

United Kingdom: 63,708,000

 

Nigeria: 0.00173615*10^11=173615*10^3=173, 615, 000

 

Bangladesh: 15, 251*10^4=152, 510, 000

 

So, 

Brazil

Nigeria

Japan

Bangladesh

Germany

United Kingdom

 Aug 28, 2018
 #2
avatar
0

Can I ask you one more question?

 Aug 28, 2018
 #3
avatar+3994 
+1

Yeah, sure.

tertre  Aug 28, 2018
 #4
avatar
+1

 

Which expressions are equivalent to  4^3*4^-5

 

https://snag.gy/1beVlw.jpg

 

i  got B, D, H and I 

 

Is that right?

Guest Aug 28, 2018
 #5
avatar+3994 
+2

4^3*4^-5=4^3+-5=4^-2, so (A), and 4^-2=1/16, and that is also (B). (H) also works two: 1/4^2=1/16. (I) also works! and, (j) too, 4^3/4^5=1/4^2=1/16. 

 Aug 28, 2018
 #6
avatar
+1

Do D doesnt work?

Guest Aug 28, 2018
 #7
avatar+98182 
+1

Yep... D  too   1/16  = .0625

 

 

cool cool cool

CPhill  Aug 28, 2018

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