You have two parents, four grandparents, eight great-grandparents, and so forth.(a)If all your ancestors were distinct, what would be the total number of your ancestors for the past 42 generations (counting your parents' generation as number one)? (Hint: Use the formula for the sum of a geometric sequence.)(b)Assuming that each generation represents 25 years, how long (in years) is 42 generations?

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step-by-step explanation:

you need to know that the corresponding sides and angles are the same.

step-by-step explanation:

assume that y=mx+n

you may see as , where

in we change places of numerator and denominator, then we insert an opposite sign

and substitute m=-1/3 in the equation y=mx+n

point (4,2), so we substitute x=4, y=2 to the equation and calculate

the answer is