Calculate the inverse of the matrix and find the values for a, b, c, and d:
A=[4 12 1 10] A-^1=[a/14 b/7 c/28 d/7]

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

Me because some of question i don’t understand

Afootball quarterback has two more chances to throw a touchdown before his team is forced to punt the ball. he misses the receiver on the first throw 25% of the time. when his first throw is incomplete, he misses the receiver on the second throw 15% of the time. what is the probability of not throwing the ball to a receiver on either throw?