Answer:
a.
Step-by-step explanation:
U = {3, 4, 6, 7, 9, 11, 12, 15}
A = {3, 6, 11, 12}
B = {6, 7, 11, 15}
Since, 6 and 11 are common elements in sets A and B. Therefore ,

Answer:
Yes
Step-by-step explanation: No do you work
150/x = 200/100 (2/1)
150 is 200% of 75
Answer:
x=84
Step-by-step explanation:
We know that the angles in a triangle are equal to 180.
39+57+x=180
96+x=180
x=84