What is 2.12 billion in scientific notation

2.12 ×

Step-by-step explanation:

2.12 billion = 2,120,000,000 = 2.12 ×

ok so 2.12 billion is 2,120,000,000‬ so you would go left with the decimal point  so you would count to where there was only one in front of the decimal and the  and 2 behind the decimal and so you would go  9 places to the left and get the answer of 2.12 x 10^9

Step-by-step explanation:

hope this helps  :) plz give brainiest

answer: d. $20

step-by-step explanation:

just took the test

the ratio of white tiles to blue tiles is 48: 16. the ratio in it's simplest form is 3: 1.

step-by-step explanation:

ratio: take the first number and add a colon next to it, then add the second number after that. make sure the ratio order matches up with the written problem!

simplest form: we can simplify the ratio 48 : 16 by dividing both terms by the greatest common factor (gcf).

the gcf of 48 and 16 is 16.

divide both terms by 16:

48 ÷ 16 = 3

16 ÷ 16 = 1

reducing to simplest form:

48 : 16 = 3 : 1