Answer:
Step-by-step explanation:
Given
Rotation: 90 degrees clockwise
Required
Determine A'B'C'
When a point 
is rotated 90 degrees in the clockwise direction, the new coordinates is: 
So, we have:
Becomes
Answer:
It is a function
Step-by-step explanation:
The Vertical line test
Draw a vertical line. If it touches the graph one time, it's a function.
It
can be described useing two other undefined terms :- point & line
Answer:
2.25
Step-by-step explanation:
The total frequency is:
20 + 12 + 6 + 2 = 40
Calculate the probability of each score:
P(X=3) = 20/40 = 0.50
P(X=2) = 12/40 = 0.30
P(X=1) = 6/40 = 0.15
P(X=0) = 2/40 = 0.05
So the expected value is:
E = (3)(0.50) + (2)(0.30) + (1)(0.15) + (0)(0.05)
E = 2.25
Answer:
true
Step-by-step explanation:
(-8) + 9=1
9+(-8)=9-8=1
