Find the sum of the given polynomials. 3x 2 + 2x - 5 and -4 + 7x 2 1. -x2 + 9x - 9 2. 21x2 + 2x + 20 3. 10x2 - 5x - 1 4. 10x2 + 2x - 9

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

10 points? me . its important ‼️‼️

Write a similarity statement for the similar triangles. afgh ~ a