Answer:
2485
Step-by-step explanation:
The number of seats in row n is given by the explicit formula for an arithmetic sequence:
an = a1 +d(n -1)
an = 20 +3(n -1)
The middle row is row 18, so has ...
a18 = 20 + 3(18 -1) = 71 . . . . seats
The total number of seats is the product of the number of rows and the number of seats in the middle row:
capacity = (71)(35) = 2485
The seating capacity is 2485.
Answer:2
Step-by-step explanation:
Make the numbers whole by multiplying by 15 to both fractions. 4/5 would become 12 and 2/3 would become 10. Subtract 12-10 to get 2.
Answer:
Step-by-step explanation:
The vertex is either the highest point on the parabola or the lowest point. We have a positive parabola, so the vertex is a low point. It sits at (2, -4). Locate that point and see what I mean by the lowest point on the parabola.
Answer: 8
Step-by-step explanation:
All you need to do is add or subtract 2pi (a whole rotation) to the central angle. You add if you want to find the positive coterminal angles and you subtract to find the negative coterminal angles.
