What is the order of magnitude of these numbers? 5.1 x 10^4 1.63 x 10^-10

What is the length of the segment joining the points at (4,5) and (6,-2) round to the nearest tenth if necessary

What value of x will make the triangles similar by the sss similarity theorem?

Complete the steps, which describe how to find the area of the shaded portion of the circle. find the area of the sector by multiplying the area of the circle by the ratio of the to 360. subtract the area of the triangle from the area of the sector.