Answer:
5 students
Step-by-step explanation:
9 students studied for more than 3 and 4 students studied less .
9-4=5
Answer:
b. complementary
Step-by-step explanation:
-Complementary angles are angles that add up to 90°.
-These are usually the two acute angles in the right triangle.
#To verify, lets take the two angles 30° and 60°:

#We can reverse as:

Hence, two angles are said to be complimentary if they sum up to 90°.
Answer: B
Step-by-step explanation:
12a-(4b+4a)-b
12a-4b-4a-b
=> 8a-5b
Answer:
$0.25
Step-by-step explanation:
2.99/12 aprrox. equals 25 cents