Atextbook store sold a combined total of 423 math and psychology textbooks in a week. the number of math textbooks sold was 45 more than the number of psychology textbooks sold. how many textbooks of each type were sold?

i need the options

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)