Which situation has a net result of zero?

- the temperature was -90 degrees f and fell 90 degrees f

- janet had $4 and gave $3 to her friend.

- high tide was 5.5 ft and now low tide is - 0.5 ft.

- the hot air balloon rose 539 feet. it then lost 539 feet of altitude.

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)