Your classmate is starting a new fitness program. he is planning to ride his bicycle 30 minutes every day. he burns 7 calories per minute bicycling at 11 mph and 10.75 calories per minute bicycling at 15 mph. how long should he bicycle at each speed to burn 300 calories?

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)