Initially, a tank contains 10 pounds of salt in 80 gallons of water. Such a tank has pure water flowing into it at a rate of 5 gallons per minute. The contents of the tank are kept thoroughly mixed and flow out at a rate of 3 gallons per minute.
What is the amount of salt at any instant?

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).

Aline has a slope of 1/4 and passes through point (0.4,-1/2). what is the value of the y-intercept?

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9