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The first galaxies and stars are believed to have formed ________ years ago.

The equation of the tangent plane to the surface

Find the mass of the solid E which lies above the xy-plane and below the paraboloid

The temperature at a point (x,y) is given by 

The parametric equations for the tangent line to the curve with parametric equations  

A projectile is fired with an initial speed of 700 m/s and angle of elevation of 60 degrees.  Assuming no air resistance, and that the projectile is fired from a height of 0 m onto a flat field, find the range of the projectile (  ). Round your value to the closest integer,

If we reverse the order of integration of the integral 

The integral 

The parametric equations of the line through the point (3,4,5) that is parallel to the plane

Values of the function  are given in the table: x                  \      y         5 10 15 20 2 20 25 31 40 4 16 20 24 30 6 13 17 19 26 8 40 30 26 20 Which of the following is the best approximation of the partial derivative