What is the discriminant of the quadratic equation 2x + 5x^2=1?

Can (3,5 and square root 34) be sides on a right triangle?

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

The suare root of 9x plus 7 plus the square rot of 2x equall to 7