Rana's computer repair service charges $45/h. Bill's computer repair service charges a flat fee of $25 plus $18/h. Each company
1 answer:
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Answer:
-
Step-by-step explanation:
=
( cross- multiply )
6x = 5y ( divide both sides by 6 )
x = y
Then
← substitute x =
y into the expression
=
=
=
= × -
= -
Answer:
3 strain would still alive after 48 hours
Step-by-step explanation:
Initial population of virus = 40000 grams
A certain virus is dying off at a rate of 18% per hour.
We are supposed to find how much of the strain would still be alive after 48 hours
Formula :
=Initial population
N(t)= Population after t hours
r = rate of decrease = 18% = 0.18
t = time = 48 hours
So,the strain would still be alive after 48 hours=
Hence 3 strain would still alive after 48 hours
Hope these help but i wrote all of it out with all its geometrical reasons
