Answer:
n=-1
Step-by-step explanation:
First you add 5 to both sides an you would get -15n=15
Next divide by -15 on both sides and get n=-1
Proof:
Multiply both of the sides by 3. You would get 12d = c - d. Add d on both sides, and you would get c = 12d
Answer:
mean=sum of data /no of data
=66/6
=11
mean=11
for median u should arrange the data from ascending to descending order.so,
3,8,10,12,16,17
median=N+1/2(N=number of data)
=7/2
=3.5
=3 rd term + 4 th term/2
=10+12/2
=22/2
=11
median=11
Step-by-step explanation: