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Answer    vfhjmbvdfghjmbnv:

Step-by-step explanation:

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  x = 3

Step-by-step explanation:

An exterior angle is equal to the sum of the remote interior angles:

  2x^2 +3x +6 = (8x) +(3x^2 -6x)

  x^2 -x -6 = 0 . . . . . . subtract the left-side expression, put in standard form

  (x -3)(x +2) = 0 . . . . .factor

The value of x is a value that makes a factor zero. These factors are zero when x=3 or x=-2. Only positive values of x will give positive angles in this geometry. The only useful solution is ...

  x = 3

blue marble is 15 times out of 50 = 15/50 reduces to 3/10

landing on tails is 24 out of 50 = 24/50 reduces to 12/25

to find the probability of both multiply together:

3/10 x 12/25 = 3 x 12 / 10 x 25 = 36/250

if you multiplied the numerator and denominator by 10 you get 360/2500.

the answer is 360/2500