A rectangle has a length of (3x2 -5x + 7) and a width of (-5x2 + 8x - 2). What is the perimeter of the rectangle?

A.
-4x2 + 6x + 10

B.
8x2 + 13x + 9

C.
-2x2 + 3x + 5

D.
-16x2 + 26x + 11

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).

Solve for x where 0 equation: cot^2x+2cotx+1=0

In a tutoring session, 2/3 of an hour was spent reviewing math problems. adelina attended 3/4 of the tutoring session. how much time did adelina spend at the tutoring session?