6/15 simplified is 3/5 so the ratio can be written as:
3 to 5
3:5
3/5
Answer:
lol me and thanks :p
Step-by-step explanation:
The answer is about $10 is the estimate. Round $3.85 to $4 Round $3.06 to $3 Round $2.79 to $3 add $4+$3+$3=$10
A(t) = A 0 e -0.000002t
A (t) 20
A0. 80
T time in years?
20=80 e -0.000002t
Solve for t
20/80=e -0.000002t
Log (20/80)=log (e)×-0.000002t
T=(log(20÷80)÷log(e))÷(−0.000002)
T=693,147 years