Use the discriminant to determine the number of solutions to the quadratic equation −45 d^ 2 +4d−1=0 .

Use the radius you found in part i (r=26.8 cm) with the surface area formula below to find the surface area of the sphere. show your work and round your answer to the nearest tenth. the surface area of a sphere: sa = 4πr^2 self note: 3.8.4

How many zeros does the function f(x)=4x3-x2+1 have

Tatiana reads 40 pages of her book every night for x number of nights. write an expression that shows the number of pages she has read