Answer: Option A is correct that is 
Explanation:
we will substitute the values of n in given expression

when substituting n=1 we get in
=
when n=2 we get 
when n =3 we get
;3 factorial that is 3! = 3 *2*1 = 6
when n=4 we get
;4! = 4*3*2*1 = 24
Note: factorial means the product of the terms getting multiplied till 1
suppose n! will be equal to n(n-1)(n-2)(n-3).......1
Answer:
192g3
Step-by-step explanation:
Step 1 find the volume
6×4×10=240
Step 2 find the mass
240× 0.8g/cm3= 192g3
Answer:
12²2222 is the annswer
Step-by-step explanation:
i don't lnow
Answer:
the answer is c
Step-by-step explanation:
Answer:
The age of the spear head is of 1938 yers.
Step-by-step explanation:
The amount of carbon 14 after years is given by the following equation:

In which Q(0) is the initial amount and r is the decay rate.
The half life of carbon 14 is 5700 years.
This means that 
So








So

We have to find:
t for which Q(t) = 0.79Q(0). So








Rounding to the nearest year.
The age of the spear head is of 1938 yers.