For what values of k does the graph of y=-2x^2+5x+k not cut the x-axis?

I want the working out to be detailed on how exactly do we solve this question.

I asked this earlier and got no answer. Will give brainliest The area of a square in 225 inches squared. a. Write a quadratic equation that can be used to find the dimensions of the square. b. Solve the equations. What are the dimensions?

Is 12/15 greater than 12/14

In a library, 13 out of 65 books on a bookshelf are non-fiction. If the library has 4,000 books total, how many of those are non-fiction? (use rule of four)

My brother is 5 years older than me. My sister is 3 years younger than me. d How old will my sister be when I am n years old?

A contractor purchases 4 dozen pairs of padded work gloves for $58.56 SheShe incorrectly calculates the unit price as $14.64 per pair for the expense report. What is the correct unit price? What is the error?

What is the sum? - 0.3 + (-1.8)

Alejandro has 5 7/8 pizzas left over from a party. Is 1/4 of a pizza is a serving how many servings does Alejandro still have left?

Simplify 5 (R + 2) - 6. A. 5R + 4 B. 5R - 4 C. 5R - 6

Meg started her trip with 11 1/2 gallons of gas in her car's tank. She bought an additional 6 4/5 gallons on her trip and arrived back home with 3 3/10 gallons left. How much gas did she use on the trip?

Two buses leave the same station, at the same time, traveling in the same direction. One bus is traveling at a rate of 32 miles per hour, while the second bus is traveling at a rate of 38 miles per hour.