3x - 12x - 5x
= 3x - 17x
= - 14x
answer
-14x
Answer:
a = 6
Step-by-step explanation:

Answer:
DC=30
CM=15
Step-by-step explanation:
Given
Triangle DEF with C centroid
DM=45 (length of median)
centroid divides median in the ratio 2:1(larger side at vertex)
⇒
DC
⇒DC=30
DC+ CM=DM
30+CM=45
⇒CM=15
Answer:

Step-by-step explanation:
Given series is,
50,80,110....
First term, a = 50
Common difference, d = 80-50 = 30
We need to find the nth term of the given sequence.
The nth term of an AP is given by :

Put a = 50 and d = 30 in the above formula

Hence, the nth term of the sequence is
.