Step-by-step explanation:

Answer:
44
Step-by-step explanation:
x = 4 and y = 12.
5х² - 3у
20x - 3y
80 - 36
44
Answer:
4 8 12 16
3 6 9 12
Step-by-step explanation:
Answer:
All of the options when substituted for b will make the root of b irrational
Step-by-step explanation:
Mathematically, surds are roots of non-perfect squares and they are tagged as irrational numbers
For b to be irrational, all of the numbers given would fit. This is because all of these numbers are non-perfect squares meaning they do not have square root.
So what this mean is that these numbers when put under the root umbrella are irrational numbers as they are not perfect squares
20% of 220 is 44 people so if you divide 220 by 2 you have 110 of each then add 44 to one and subtract 44 from the other the answer to a is 154 and the answer to b is 66