Answer:
Step-by-step explanation:
Divide the equation by 3, subtract 9, take the square root.
3x^2 + 27 = 0
x^2 + 9 = 0 . . . . . divide by 3
x^2 = -9 . . . . . . . . subtract 9
x = ±√(-9) . . . . . . take the square root
x = ±3i . . . . . . . . . use imaginary numbers to express the root
Answer:
The equation is
Let n represent the number
4n + (-2) = 5n + 8
4n - 2 = 5n + 8
Solve for n
Group like terms
4n - 5n = 8 + 2
-1n = 10
n = 10/-1
n = -10
The number is -10
Rational, because it is a repeating decimal. I believe that's the correct answer.
Probability of drawing a black card is 1/2
Probability of drawing a 9 is 1/13
Multiply together. You get 1/26.
Answer: B
I hope this helps you