120
85
46
251 so it would be 251 arrangements
So we have the formula for the area of a sector of a circle:

where

is the <span>area of the sector
</span>

is the central angle
<span>
To solve for </span>

, we are going to divide both sides of the equation by

, and then we are going to multiply both sides of the equation by 360°:



We can conclude that the solution for s is:
62-2h <40 because you start with 62 degrees. As each hour passes, you take away two more degrees. Proceed to do this until you get below 40
Answer:
it's estimated that 750 students in the whole school dislike the 8:30am start time.
Step-by-step explanation:
Since 30 of the 40 students said "no", it means 30/40, or 3/4 of the random sample disliked the 8:30am start time. Multiply this by the whole population: 1,000 × (3/4) = 750.
Another way to check this is using 10/40 = .25 and doing 1000x.25 = 250 (the amount of students who liked it). Then subtract from whole population and it's 750.