What is the definition of an irrational number

answer:

step-by-step explanation:

an irrational number is real number that cannot be expressed as a ratio of two integers. the number "pi" or π (3. is a common example of an irrational number since it has an infinite number of digits after the decimal point.

80x^8−68x^6+16^5−20x^4−4x^3+8x^2

hope i'm right lol

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15