Solve y(y−10)+30=0 by using the quadratic formula. If there is no real solution

The answer is below:

Step-by-step explanation:

Rewrite: y(y−10)+30=0 into

y^2-10y+30

Quadratic formula:

Hope this helps!

Step-by-step:

The first flip numbers will always add up to 1 so you do

1 - 2/7= 5/7

now it gets easy...

The second flip  head will be 2/7 because it is a biased dice and the second flip tail will be 5/7

This also applies for the bottom 2: 2/7 head, 5/7 tails

hope this helped :)