The temperature at a point (x, y,z) is given by t(x, y,z)=200e−x2−y2/4−z2/9t(x, y,z)=200e−x2−y2/4−z2/9, where tt is measured in degrees celsius and x, y, and z in meters. there are lots of places to make silly errors in this problem; just try to keep track of what needs to be a unit vector. find the rate of change of the temperature at the point (0, -1, 2) in the direction toward the point (-3, 4, -3).

5/6+7/8what is the answer sealsdbdbshd

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?

Daniel expanded the expression as shown below -2(-8x-4y+3/4)=-10x-8y-11/4 what errors did he make? check all that apply