Answer:
2.5 half-lives
Step-by-step explanation:
Find 
in 
given 
is the amount after the time 
, 
`is the initial amount, is the half-life
We know that after half-life there will be twice less the initial quantity:
.
Simplifying gives 
Plugging this into the initial equation, we obtain that 
or 
Finally, just plug in the given values and find the unknown one.
From 
, we have that 
= 
So you should get: 
<h2><u>MARK ME AS BRAINLIEST IF YOU WISH</u></h2><h2><u /></h2>
Answer:
they are congruent.
Step-by-step explanation:
just move A down to -1 and and you can see they are the same.
Lines are in the form y=mx+b, where m is the slope and b is the y-intercept. Thus, the equation of this line is y=-8x+5.
It would be 4.8333333333.
The three repeats here.
2.5 is the answer to 10 divided by 4, which is the same as 4 multiplied by (a) equals 10. And (a) stands for ur answer, 2.5.
