Answer:
15.625 grams
Step-by-step explanation:
The decay is First order reaction
The half life of the first order reaction is given by
T(1/2) = ㏑2/K
where K is the reaction constant for the first order reaction
T(1/2) = 2
2 = ln 2 /K
K = ln2/2
The equation of the first order reaction is given by
Kt = ln (
)
where
t = time = 10years
Ro = initial concentration
R = amount left after time t
upon substituting the values
5ln2 = ln (500/R)
ln 
= ln (500/R) (a*lnb = ln
)
R = 500/32 = 15.625grams
Therefore the amount of pesticide left after 10 years is 15.625grams
Answer: t = 16.49304 ≈ 16.5 minutes
Step-by-step explanation: I pressed see solution
Answer:
ok from looking at this we can see that it goes up one hour for every 25 miles so
25mph
Hope This Helps!!!
The correct answer is A. 3:4 = 9:12
Answer:
1. B
2. A
Step-by-step explanation:
The point slope form of a line is 
where 
. We write
To find m, count the slope from each marked point on the graph. Notice one is 1/2 so we will count by halves. The slope is 8/9
This means B is the point slope form. To convert to the standard form, it must be written as 
. We convert using inverse operations.
