bs815900
02.09.2019 •
Mathematics
Find the length of ab in abc shown on the coordinates plane. round to the ut unit. a=5 b=8 c=9 d=13
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Ответ:
bc=5
Ac=8
Ab= root 5²+8²=9.4
the answer is C.9
Ответ:
∠ 1 = 85°
Step-by-step explanation:
In a trapezoid each lower base angle is supplementary to the upper base angle on the same side, thus
∠ 1 = 180° - 95° = 85°