Given that the half life of carbon-14 is 5,715 and that 6 g of the isotope is remaining after 1,000 years, the initial quantity of the isotope is obtained as follows:
Recall that the amount remaining of a radioactive substance with initial quantity No and half life t(1/2) after t years is given by:
Thus:
<span>mostly collect like terms
use associative property which is
(a+b)+c=a+(b+c)
also -a+b-c=(-a)+(b)+(-c) so you can move them around
and remember that:
you just use a general rule
x+x=2x
x^2+x^2=2x^2
3xy4xy=7xy
3x+4x^2=3x+4x^2
you
can only add like terms( like terms are terms that are same name like x
or y are differnt, and like terms have same power exg x^2 and x^3 and
x^1/2 and such
I will oly put the naswers because I don't have much time
first one: 2a+3b+2c
second one: remember that -(-6c)=+6c so the answer is c-10a-2b
third one: -a-8b-5c
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Ethan saved 43 more dollars than alex
Answer:
48
Step-by-step explanation:
21.12/0.44=48
I hope this helps :)
Brainliest pls?
Answer:
6 foot
Step-by-step explanation:
so you can make a ratio out of it kinda
height : shadow height
18 : 12
1.5 : 1
so if its height : 4
the height would be 6 (4 + 2)
hope that makes sense :)
