This is a square with area 36 in^2
So dimensions are 6 * 6 ins and perimeter = 24 ins.
Answer: 693 years
Step-by-step explanation:
Expression for rate law for first order kinetics is given by:

k = rate constant
t = time taken for decomposition = 1
= Initial amount of the reactant
= amount of the reactant left =



for half life : 

Putting in the values , we get


Thus half life of this isotope, to the nearest year is 693.
Answer:
7a + 5
Step-by-step explanation:
Distribute using PEMDAS.
I don’t know sorry I’m on the same one and can’t find it out
It's B because all the students that attended added together is 320 and 37.5 of 320 is 120