Question

The population of the United States is about 3x10 8th to the power and The population of Mexico is about 1.2x10 to the 8th power how many times larger is the population of the United States than that of Mexico?

Answer 1

Division is the inverse operation of multiplication. Thus to determine how many greater quantity A is than quantity B, divide quantity A by quantity B.

Answer 2

so i have to divide 300000000 by 1.200000000

Answer 3

Correct\[\frac{ 3.0\times10^{8} }{ 1.2\times10^{8} }\]

Answer 4

idk how to do that

Answer 5

so i would get 25000000000

Answer 6

NO, you would just get 2.5

Answer 7

oh okay

Answer 8

so how many people live in both the united States and Mexico combined ????

Answer 9

because 3/(1.2) = 2.5 and (10^8)/(10^8) =1. Thus 2.5 X 1 = 2.5. Understand?

Answer 10

oh i understand

Answer 11

To determine the total population of both countries, add the two populations.

Answer 12

wait so i have to add 1.200000000 to 300000000

Answer 13

To add two (or more) numbers in scientific notation form, first you have to write both numbers with the same powers of 10. This is already done for you in the question. Now just add the 3.0 and 1.2 and the power of 10 will be the same. So what's 3.0 + 1.2 = ? first

Answer 14

its 4.2

Answer 15

Correct! So then the total population is\[(3.0\times10^{8})+(1.2\times10^{8})=4.2\times10^{8}\]Understand @cookielate ??

Answer 16

yes

Answer 17

Excellent work!! As a teacher I like students who want to learn rather than just wanting answers because many students on this site just want answers and I don't do that because that's not learning so Good Job!!

Answer 18

Anything else?

Answer 19

thanks but then i have to multiply 4.2x10 to the power of 8th or do i have to leave it like that

Answer 20

No, that's fine unless you're asked to express your final answer in standard form, in which case you would write 420000000. Understand?

Answer 21

thank you so much i really thank you for helping me so much i dont know how to thank you god bless you and i did not know that you were a teacher o.o

Answer 22

More than welcome! I appreciate that. Yes I'm a teacher of math/Physics. I log in whenever I can during my spare time to help as many students as possible.

Answer 23

Can I help you with anything else?

Answer 24

that so nice your not like other teachers that are mean and rude

Answer 25

Haha...Thank you.

Answer 26

no problem ughh i still have to do a little more of math hw

Answer 27

well i guess i will try my best

Answer 28

Alright, I'll be logged in for a bit longer so if you need me just ask. Meanwhile I'll see if there's someone else who can use my assistance. Good Luck! Bye for now.

Answer 29

bye thank you for helping me