What is the value of b^2-4ac for the following equation?

2x^2 - 2x - 1 = 0

a.-4

b. 0

c. 12

A team of cross-country runners is training for a meet. The table shows the distance run and the overall time so far for each team member.

What is the value of the following expression? 2*{6 + [12: (3+1) ]} - 1

Iron Hill Pallet Company produces hardwood mulch by grinding used pallets. The company's grinder can produce 11 cubic yards of mulch per hour and operates the grinder 24 hours per day for 250 days per year.

851-473 is the same as ___[dash]-470

Round 963 to 1 significant number

85% of z is 106250. what is z

A car is on a driveway that is inclined 10 degrees to the horizontal. A force of 490 lb is required to keep the car from rolling down the driveway. a) Find the weight of the car. b) Find the force the car exerts on the driveway.

Lily saw a jellyfish at 6 feet below sea level she she saw a bluefish 10 feet below sea level what is the distance between the Bluefish and the jellyfish

Which question is being asked in this story problem? Mary bought 3 bouquets of flowers on Monday. She paid $5 for each bouquet. On Friday she bought 1 more bouquet than on Monday. How much did Mary spend on bouquets on Friday? A.

The height of a triangle is 18 inches. Find the length of the base if the area of the triangle is 63 square inches