Me pude ayudar con este ejercicio

For this case we have a system of these equations with two unknowns:

According to the first equation we have:

According to the second equation we have:

We match:

Now, we find the value of the variable "a":

Finally we have to:

b

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)