Hi there! The answer is 50% (or 0.5).
There are 10 students in either the first or the third row. In total we have 20 students. Therefore the probability can be determined by dividing 10 (amount of correct answers) by 20 (total amount of outcomes).
Answer:
40°
Step-by-step explanation:
180-(57+43)=100°
which mean the angle at the top =100°
180-100=80°
x=80/2
x=40
Answer:
B
Step-by-step explanation:
A polygon is plane<span> shape with <em><u>straight</u></em> sides. Therefore, a pentagon is a polygon!</span>