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.

Which of the following r values represents the weakest correlation? A. 0.45 B. 0.55 C. 0.65 D. 0.35

write an equation of a line in the slope intercept form when the slope is - 3/4 and the y intercept is 5

Which best describes the transformation that occurs from the graph of f (x) = x^2 to g (x) = (x+3) ^2 + 4

Write a geometric sequence to describe the areas of successive regions

Which is greater 2/9 to 1/5

Let f (x) = 27x5 - 33x4 - 21x3 and g (x) = 3x2. Find f (x) / g (x) A. 9x2 - 11x - 7 B. 9x2 + 11x + 7 C. 9x3 - 11x2 - 7x D. 9x3 + 11x2 + 7x

Each school year the seventh graders who study life science particapate in a special field trip to the city zoo in 2010 the school paid 1,260 for 84 students to enter the zoo.

Jonah's house and his grandparent's house are 8,046.72 meters apart. what is this distance in miles?

How do you find 3 (x-2) ^2

3.1x + 2.8z 4.3x - 1.2z subtract the following polynomials