I have 2 math assignments I need help with, Simplifying Radicals and Radicals and Rationals Exponents.

The weight of an object in a particular scale is 175.2 lbs. the measured weight may vary from the actual weight by at most 0.1 lbs. what is the range of actual weights of the object

Proving the congruent supplements theorem

B. two events are dependent if the occurrence of one event changes to occurrence of the second event. true or false