Match each problem (term) with its sum or difference (definition)

6.45 + 19.82 a) 4.467
64.5 + 1.983 b) 66.483
6.45 − 1.983 c) 44.67
64.5 − 19.83 d) 26.27

In the figure below, segment ac is congruent to segment ab: triangle abc with a segment joining vertex a to point d on side bc. side ab is congruent to side ac which statement is used to prove that angle abd is congruent to angle acd? segment ad bisects angle cab. triangle acd is similar to triangle abd. segment ad is congruent to segment ac. angle cab is congruent to angle cba.

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

Factor -8x3-2x2-12x-3 by grouping what is the resulting expression?