25c2 + 10c – 12 = -4
Solve the equation for all real solutions

Aman steps out of a plane at a height of 4,000m above the ground falls 2,000m very quickly and then opens his parachute and slowly falls the remaining 2000m to the ground what height above the ground would be the best choice for a reference point

Match each expression with its simplified form.

How do you create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1?