Let $u$ and $v$ be the solutions to $3x^2 + 5x + 7 = 0.$ Find \[\frac{u}{v} + \frac{v}{u}.\]
I keep getting 25/21 but its wrong

Question 10jur's car can travel 340 miles on 12 gallons. jack's car can travel 390 miles on16 gallons. which person has the best mileage (miles per gallon) and what istheir mileage?

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart