Answer:8
Step-by-step explanation:
72/9=8
We know what every year has 365 but once every four years has 366. We can simplify it by saying that every year has 365 and 1/4 days
Now, we just have to mulitiply

So we can say that 50 years have 18262 days and chance to 18263 (depends when we started counting)
Answer:
a₁ = 10
Step-by-step explanation:
The common difference d is calculated as
d = a₃ - a₂ = - 20 - (- 5) = - 20 + 5 = - 15
Then
a₂ - a₁ = d , that is
- 5 - a₁ = - 15 ( add 5 to both sides )
- a₁ = - 10 ( multiply both sides by - 1 )
a₁ = 10
You can get the answer by subtracting the time it took Mark to cut the grass from the total amount of time it took him to do the chores. So 4 hours and 40 minutes minus 1 hour and 45 minutes is 2 hours and 55 minutes