Find the odds of an event occurring, given the probability 1/2

The table shows the balance of a money market account over time. write a function that represents the balance y (in dollars) after t years.

If 2(a^2+b^2)=(a+b)^2 then, > a+b=0, > ab=0, > a=b, > 2a=b

In δabc, m∠acb = 90°, cd ⊥ ab and m∠acd = 45°. find: a find cd, if bc = 3 in