Answer:
2
Step-by-step explanation:
22 - 2y
= 22 - 2 ( 10 )
= 22 - 20
= 2
Answer:
The common difference of the given AP is d=5.
Step-by-step explanation:
Given the sequence

An Arithmetic sequence has a constant difference 'd' and is defined by

Computing the common difference of all the adjacent terms


As the difference between all the adjacent terms is the same and equal to

Therefore, the common difference of the given AP is d=5.
Answer:
6 hours
Step-by-step explanation:
she played game 25% of the time.
25% of 30 hours is 7.5 hours
she researched 5% of the time.
5% of 30 hours is 1.5 hours
so she played game 7.5-1.5=6 more hours than she researched