Arandom sample of 15 dvd players has a mean price of $64.30 and a standard deviation of $5.60. find a 95% confidence interval for the mean price of all dvd players.

Find parametric equations for the line tangent to the curve of intersection of the surfaces at the given point. surfaces: xsquared2plus+2yplus+2zequals=1212 yequals=33 point: left parenthesis 1 comma 3 comma five halves right parenthesis

Which of the following expressions is equal to 2x^2+8

Bring the fraction a/a-4 to a denominator of 16-a^2