Answer:
Step-by-step explanation:Please mark me as the brainlyest
F(19)= (3/(19+2)) - sqrt(19-3)
= (3/21) - sqrt(16)
= (1/7) - 4
= (1/7) - (28/7)
= -27/7
= - 3 6/7
It would be 25 how I got that answer was I did 200 ÷ 8 and that gave me 25
A(t)=A0*(1/2)^(t/30)
where t=elapsed years
A0=initial mass at t=0.
7 centimeters because you have to find how many kilometers are in each kilometer and that is 40 so then you divide 286 by 49 which is 7.15 then you round
