The value of X is D. 25
Every triangle adds up to 180 degrees so you just add up the given numbers, then subtract that number from 180 and that is your answer.
Answer:
(7n^2+8n+2)
Step-by-step explanation:
(7n^2+9n+9)–(n+7)
Distribute the minus sign
(7n^2+9n+9)–n-7
Combine like terms
(7n^2+8n+2)
Answer:
It's B
Step-by-step explanation:
This number can not be simplified or be a whole number it is already simplfyied.
Answer:
2
Step-by-step explanation:
∵a+1,2a+1,4a-1 are in A.P.
2(2a+1)=a+1+4a-1
4a+2=5a
5a-4a=2
a=2
