Which of the following random variables are continuous variables and which are discrete​

Using the quadratic formula find the zeros of the given polynomial -5x^2+3x-11

You are on a cycling trip around europe with friends. you check the weather forecast for the first week. these are the temperatures for the week. sun mon tues wed thurs fri sat 16°c 20°c 24°c 28°c 28°c 23°c 15°c what is the mean temperature forecast for the week?

Me with this one question, and i'll upvote the brainliest answer