I roll a cube 50 times and got an even number 30 times. What is the relative
frequency (or experimental probability) of rolling an even number?

60%

Step-by-step explanation:

To do this you know that the cube was rolled 50 times and out of that 50, 30 were even.  So you set 30/50

30

= .6 then you set that to a percent simply getting 60%

50

I hope this helps :)

i can try and you the very best that i can.

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.