Answer:

Step-by-step explanation:
The probability for a flip on either side of the coin is always 50% or 
So to get the probability for the three flips just do:
or
×
× 
Either way you solve it the answer is 
The triangles PTQ and RTS are similar; so the ratios of corresponding sides are equal.
Let us denote the unknown length SQ as x.
We could make the following similarity relation;

Cross multiply to obtain;

Therefore;

Therefore, the answer is option A
Answer:
number 5:4/12
#6: 25/45
#7: 26/44
#8: 52/30
Step-by-step explanation:
Answer:
X = 1 3/4
Step-by-step explanation:
Hope this helps!