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

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116