Answer:
957
Step-by-step explanation:
Slope of blue using their 2 points is 4/6 or 2/3
slope of green using their points is 2/3 which is the same as the other triangle.
4/6 = 2/3. and this is true, the slopes are equal
Hope this helps! :)
There is an explanation in the photo below, as well as some things to remember!
Find the difference per row:
10 seats in the first row
30 seats in the sixth row:
30 -10 = 20 seats difference.
6-1 = 5 rows difference.
20 seats / 5 rows = 4 seats per row.
This means for every additional row, there are 4 more seats per row.
The equation would be:
Sn = S +(n-1)*d
Where d is the difference = 4
S = number of seats from starting row = 10
n = the number of rows wanted
S(11) = 10 + (11-1)*4
S(11) = 10 + 10*4
S(11) = 10 + 40
S(11) = 50
Check:
Row 6 = 30 seats
Row 7 = 30 + 4 = 34 seats
Row 8 = 34 + 4 = 38 seats
Row 9 = 38 + 4 = 42 seats
Row 10 = 42 + 4 = 46 seats
Row 11 = 46 + 4 = 50 seats.
Answer:
22 because it is just a train that they are talking about not how long it takes to get to grandmas house