if m∠abc = 70°, what is m∠abd? justify your reasoning.
using the addition property of e...
Mathematics, 06.11.2019 06:31, hunterallan569
if m∠abc = 70°, what is m∠abd? justify your reasoning.
using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.
using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.
using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.
using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.
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Exercise: counting committees 0.0/2.0 puntos (calificable) we start with a pool of n people. a chaired committee consists of k≥1 members, out of whom one member is designated as the chairperson. the expression k(nk) can be interpreted as the number of possible chaired committees with k members. this is because we have (nk) choices for the k members, and once the members are chosen, there are then k choices for the chairperson. thus, c=∑k=1nk(nk) is the total number of possible chaired committees of any size. find the value of c (as a function of n ) by thinking about a different way of forming a chaired committee: first choose the chairperson, then choose the other members of the committee. the answer is of the form c=(α+nβ)2γn+δ. what are the values of α , β , γ , and δ ?
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