The cost of manufacturing a certain type of headphone varies inversely as the number of headphones increases. if 6500 headphones can be manufactured for $5.00 each, find the cost to manufacture 2500 headphones.

step-by-step explanation:

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)

6e14 is the answer.