Every irrational number is a real justify your answer

Step-by-step explanation:

A real number MUST be able to be represented on a number line.

All numbers can be placed on a number line including irrational numbers.

Numbers like π can be placed between 3.13 and 3.15. It is a number.

Numbers like x or ∑ isn't a "REAL" number because it has no value.

77

step-by-step explanation:

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.