If we flip a coin 20 times, we get sequence of heads and tails. (a) How many sequences of heads and tails are possible.
(b) How many sequences of heads and tails have exactly 5 heads
(c) How many different sequences have at most 2 heads
(d) How many sequences have at least three heads.

Find the midpoint m of z1=(8+5i) and z2=(12+3i)

Merrida uses a pattern in the multiplication table below to find ratios that are equivalent to 7: 9. if merrida multiplies the first term, 7, by a factor of 6, what should she do to find the other term for the equivalent ratio? multiply 9 by 1. multiply 9 by 6. multiply 9 by 7. multiply 9 by 9.

Complete the equation of the live through (-1,6) (7,-2)