+0

# correct me?

+1
243
7

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

Nigeria

Brazil

Aug 28, 2018

#1
+4593
+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

So,

Brazil

Nigeria

Japan

Germany

United Kingdom

Aug 28, 2018
#2
0

Can I ask you one more question?

Aug 28, 2018
#3
+4593
+1

Yeah, sure.

tertre  Aug 28, 2018
#4
+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
+4593
+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
+1

Do D doesnt work?

Guest Aug 28, 2018
#7
+111438
+1

Yep... D  too   1/16  = .0625

CPhill  Aug 28, 2018