Answer:
It is already rounded to the nearest tenth! Hope this helps!
Step-by-step explanation:
A + b = 15 ..... eq 1
a – b = 12 ...... eq 2
So a = 15 – b
Substitute in eq 2 :
15 – b – b = 12
15 – 2b = 12
–2b = 12 – 15
b = 1.5
So a = 15 – 3/2 = 13.5
4ab = 4 x 13.5 x 1.5 = 81
<span>Just list all elements that belong both to A and to B
A ∩ B = {6,12}</span>
17% is the answer to the question
