Answer:
54
Step-by-step explanation:
n(AUBUC= n(A) + n(B) + n(C) - n(A^B) - n(A^C) - n(B^C) + n(A^B^C)
28 + 28 + 25 - 11 - 10 - 9 + 3 = 54
If you don't know the formula, use venn diagram
Answer:
72
Step-by-step explanation:
Answer:
C, 45 degrees
Step-by-step explanation:
Answer:

Step-by-step explanation
We have given that equation of line a+4b=0
⇒4b= -a
⇒
slope of line = 
⇒
is negative therefore it lies into 4th quadrant
By, Pythagoras theorem 
by putting value of P= -1 & B=4
the value of
with the given condition 
i.e.
∈ (3π/2, 2π)
now, 
Answer:
You are correct
Step-by-step explanation:
collinear means that they are on the same line, so they are collinear because of the definition of collinear