Which numbers are irrational? Select all that apply.

a b and d

Step-by-step explanation: i'm not sure i just wanted to answer for 20 points. sry if i get it wrong

B) Square root of 45 and C) Square root of 30, are both irrational numbers, because they aren't perfect squares.

Explanation:

A square root can be defined as, "a factor of a number that, when multiplied by itself, gives the original number."

For example: 8 squared (8^2) is the same as 8 × 8 , which equals 64 , so the square root of 64 is 8. Since 64 is a perfect square, then it makes it a rational number.

Hope this makes sense to ya :)

step-by-step explanation:

where is the questions

14.3

step-by-step explanation:

add all the numbers together.

9 + 12 + 15 + 16 + 17 + 17 = 86

now, divide 86 by how many numbers we have: 6.

86 / 6 = 14.3