Question

A single tree produces about 2.6 × 10^2 lb of oxygen each year. The Amazon rainforest has about 3.9 × 10^11 trees.



About how many pounds of oxygen are produced in the rainforest each day ?
2.8 × 10 what is the exponent

Answer 1

For you to find the number of pounds of oxygen produced you just have to divide 2.6x10^2 by the number of days per year and multiply it with the number of trees

Answer 2

so would it be 676? @I_Need_Help_With_Home

Answer 3

\[2.778x10^{11}\]

Answer 4

soooo ten?

Answer 5

or 11?

Answer 6

@jordanloveangel

Answer 7

Its 11. and sorry I had to eat

Answer 8

1 tree = 2.6 * 10^2 lbs oxygen
so 3.9* 10^11 times 1 tree= 3.9*10^11 * 2.6 * 10^2 lbs oxygen for the year

yes it would be 3.9*2.6 * 10^(11+2 ) =

this is produced in 1 year and the question asks for the day so
you have the amount for 365 days and you need to know how much this is per day

when you multiplied you got 10.14 * 10^13 = 1.014* 10^14 for the year
divide by 365 to get for the day = 0.002778 * 10^14
2.778 * 10^ -3 *10^14 = 2.778 * 10^ (-3 + 14 )= 2.8 * 10^11

you would get the same result if you did for the day first and then multiplied by the number of trees.

when you multiply numbers with the same base add the powers (exponents) when using scientific notation the base is 10 and the general form is a * 10^n where a is >0 and < 10 and n is an integer