If 3x^2 2x + 7 = 0, then (x 1/3)^2=

if cosx=-4/5 in the third quadrant find sin2x

Newton's Law of Cooling states that the rate at which an object cools is proportional to the difference in temperature between the object and the surrounding medium. Thus, if an object is taken from an oven at 301^{\circ}F and left to cool in a room at 73^{\circ}F, its temperature T after t...

Suppose that a random sample of 100 familes taken this year reported 23 with a household incomes of at least $75,000. How would you write a claim for this?

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Let F=(2x,2y,2z) . Use Stokes' theorem to evaluate the integral of F around the curve consisting of the straight lines joining the points (1,0,1), (0,1,0) and (0,0,1). In particular, compute the unit normal vector and the curl of as well as the value of the integral

Determine whether or not matrix B is the inverse of matrix A A = [-2 6] B = [-4/15 3/10] [-3 -6] [-2/15 -1/30]

how do i find a parallel on x axis of points

A 27-ft ladder leans against a building so that the angle between the ground and the ladder is 63 degrees. How high does the ladder reach on the building? Please round answer to the nearest foot.

Can I know whether I can get help for problems in chapter 13 of the text book "Introduction to Analysis" 4th Edition by William Wade?