The measures of the angles of a triangle are in a ratio of $3: 5: 7$. what is the degree measure of the largest angle?

Which of the following answers is 7/9 simplified? 7/9 2/9 11/9 2/7

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?

What is the total area of the figure?