Which expression is equivalent to 14j - 7j + 9 + 4k + 6

A) 7j + 4k + 15
B) 21j + 9 + 10k
C) 7j + 13k + 6
D) 21j + 13k + 6​

The diameter of a table is 5 feet. what is the circumference

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 coordinates of point x that lies along the directed line segment from y(-8, 8) to t(-15, -13) and partitions the segment in the ratio of 5: 2.