En una empresa hay 200 empleados 100 hombres y 100 mujeres. Los fumadores son 40 hombres y 30 mujeres. De que tamaño es mi espacio muéstral si solo contemplo fumadores?

Correct A

Explanation:

A. Given that the equation x2+ mx+ n= 0 has two solutions, x = kand x = 2k,you can work backward to build the original equation. Here’s how:

x= kx= 2k

x– k= 0 x– 2k= 0

Now take the two equations and combine them:

(x– k)(x– 2k) = 0

x2– 2kx– kx + 2k2= 0

x2– 3kx + 2k2= 0

As you can see, m= –3kand n = 2k2, so mn= –6k3.

Edit: OMG, I'm so sorry. I didn't realize I answered the wrong question until after I posted it. Please let me know if there's a way to delete this as I don't know the answer.

2.56 is the width of the garden

step-by-step explanation:

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8