Determine the solutions for each quadratic equation. 5x^2-6X-4=0, and -3x^2-6x+4=0

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?

Need 50 will mark brainliest answer. find the lengths of all the sides and the measures of the angles.

The tile along the edge of a triangular community pool needs to be replaced? ?