The radioactive element carbon-14 has half of 5750 years. a scientist determined that the bones from a mastodon has lost 56.6% of their carbon-14. how old were the bones at the time they were discovered?

7881 years

Step-by-step explanation:

You can use the equation

fraction remaining = 0.5n where n is # of half lives elapsed

n = ?

fraction remaining = 1 - 0.612 = 0.388

0.388 = 0.5n

n = 1.37 = the # of half lives

1.37 x 5750 yrs = 7881 years

the workers who do no drive has no reasonable reason to buy gasoline due to they don't have anything to use it for

$75.00

step-by-step explanation:

i = prt

i = 1,5000 * 0.025 * 2

i = 75