The associative property of addition is being demonstrated here. The parenthesis are moved around to "associate" or "group" the values into two different pairs.
Note: the associative property of multiplication is very similar and it is
a*(b*c) = (a*b)*c<span />
Answer:
The probability is 1/4 or 25% chance of having haemophilia
Step-by-step explanation:
Let's take the hemophilia gene to be 'a' and normal to be 'A'. The woman has a gene for hemophilia due to inheritance from the father. She then married a normal man. Thus when we do our genotypic crossing, there is a product of XAXA, XAY, XAXa, XaY. Thus an hemophiliac male, XaY is just 1/4 probability
Lindsey lives 3.75 miles away from Juanita.
You're right on B. So if there are 27 pairs of sandals (starting with 9 pairs of sandals) you would divide 27 by 9 which is 3. Use 3 again and multiply it by 5 which is 15.