The sum of the measures of the angles shown is 63°. Which choice is the measure of angle ? a) 25
b) 38
c) 52
d) 101

I've never been good at math he told he loves but he keeps cheating on me, so it ain't adding up sis

Find the gradient of f(x,y,z)equals=left parenthesis x squared plus y squared plus z squared right parenthesis superscript negative 1 divided by 2 baseline plus ln left parenthesis x right parenthesis x2+y2+z2−1/2+ln(xyz) at the point left parenthesis negative 2 comma 1 comma negative 2 right parenthesis(−2,1,−2).

Find the slope of the line that contains the following points. r(-2, 4), s(6, -2)