Part 2: reflection (40 points)
4. what other methods could be used to estimate the size of a large crowd? .
describe how and why the crowd size estimate supplied by event organizers might differ from
estimates made by other groups.
5. in solving real-world problems such as estimating a crowd size, the number
of possible telephone numbers, or the answer to a fermi question, why is it necessary to first
make some reasonable assumptions about the situation?

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)

correct answer:

b.(19,-2)

10.416 meters per second

step-by-step explanation:

distance=1 00 meters

time= 9.6 seconds in decimal form or 9 3/5 as a mixed number

average speed= 100/9.6

=10.416 meters per second or 10 52/125 as a mixed number.