Answer:
Step-by-step explanation:
Given that the number of males in the classroom is three more than twice the number of females.
the total number of students is 57
Let x be the no of males then no of females = 
Also we have 3 more than twice no of females as

This equals x

No of males = 39, no of females = 18
Answer:
Square
Step-by-step explanation:
Answer:
33.3
Step-by-step explanation:
Answer:
b
Step-by-step explanation:
Answer:
∠ A = 82°
Step-by-step explanation:
The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.
A is an exterior angle of the triangle, then
∠ A = 49° + 33° = 82°