Aradioactive material has a half-life of 18.4 days. after 55.2 days, there were 177 mg of the material. what mass of the material was originally present?

Segment ab is shown on the graph. which shows how to find the x-coordinate of the point that will divide ab into a 2: 3 ratio using the formula

Given δjkl : δxyz, find x. a)10 b)12 c)16 d)20

The construction of copying qpr is started below. the next step is to set the width of the compass to the length of ab. how does this step ensure that a new angle will be congruent to the original angle? by using compass take the measures of angle and draw the same arc according to it.