
The given Angles (4x + 2) and (3x + 3) are forming linear pair, so
now, let's find Angle DCB :
Answer:
Step-by-step explanation:
15x + 12 + 10 - 20 = 12
15x + 22 - 20 = 12
15x + 2 = 12
15x = 12 - 2
15x = 10
x = 10/15 which reduces to 2/3
Again, a spreadsheet or suitable calculator makes this short work.
The sum is 184.
_____
The terms being summed are ...
2·3² +3 = 2·9 +3 = 18 +3 = 21
2·4² +3 = 35
2·5² +3 = 53
2·6² +3 = 75
Their total is
21 +35 +53 +75 = 184
Answer:
Present afe of Payal = x yrs.
Therefore, according to question,
Present age of Arav = x/3 yrs.
After 12 yrs.,
Age of Payal = (x+12) yrs.
Hence, we have,
Age of Aarav = [(x/3)+12] yrs.