R+ 354 = 1,321 include exact answer and correct explanation.

What is this equation in point-slope form?

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

Three coins are flipped. what is the probability that there will be at least two tails?