Answer:
ADD 28 blue marbles. Added for total of 32/40= 0.80
Step-by-step explanation:
4/12 or 1/3 (33%) for original amount
X/X+8=.8
X=.8 x (X+8)
X=
<u>Sorry </u>I do not remember how to complete this equation so did it by substituting numbers until solution was .80
Need a total of 32/32+8 (40) =0.8 or 80% chance
So need to add
28 blue marbles.
Sasha will pay $99.
10% of 90 is 9 so add that together you get $99.
tan7=h/820
h=820tan7
h=101m