Answer:
The median is 20.
Step-by-step explanation:
When lined from least to most (15, 20, 20, 22, 25) 20 is the middle number.
the answer will be 20 times 3 that is 60
Answer:

Step-by-step explanation:

substitute (1) to (2):
add x to both sides

subtract 5 from both sides


substitute the values of x to (2):

True, because the chord connect 2 points of the circumference, but radius connect the center and a point on the circumference.