Answer:
62.8 pls like and rate my answer
Answer:
20ln(3)
Step-by-step explanation:
Put 15 for A and solve for t.
15 = 45e^(-.05t)
15/45 = 1/3 = e^(-.05t) . . . . divide by 45
ln(1/3) = -.05t . . . . . . . . . . . take natural logs
20ln(3) = t . . . . . . . . . . . . . . multiply by 20, simplify
It will take 20·ln(3) years for the area to decrease to 15 km^2.
179.6 Celsius because I took the quiz in there no percentages in his air.
19/x=sin 20
19/sin 20=x
x=55.5522836
Answer:
false
Step-by-step explanation: