Since it has a half life of 60 days, this means that every 60 days it multiplies by 0.5. Since it asks for 300 days, your equation is 500*(0.5)^5, which is 15.625 mg left after 300 days.
Hello!
To find the area of a trapezoid you use the equation

Put in the values you know

Add

Divide

Divide both sides by 26
15 = h
The answer is 15km
Hope this helps!
Answer:
The answer is 196
Step-by-step explanation:
Find the square root of each number. All numbers are decimals but 196, which is 14
For (11, 1): (11 + 3)1 = 14(1) = 14
For (5, 2): (5 + 3)2 = 8(2) = 16 ≠ 14
For (7, 2): (7 + 3)2 = 10(2) = 20 ≠ 14
For (3, 2): (3 + 3)2 = 6(2) = 12 ≠ 14
Therefore, (11, 1) is a solution to this equation.