cuhh
04.07.2019 •
Mathematics
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Ответ:
The answer would be D.
Step-by-step Explanation:
47 minutes = 47/60 degrees = 0.7833 degrees
sin 52.7833 = 0.796354
Hope this helps!
Ответ:
Step-by-step explanation:
Properties of Rhombus
All sides of the rhombus are equal. The opposite sides of a rhombus are parallel. Opposite angles of a rhombus are equal. In a rhombus, diagonals bisect each other at right angles. Diagonals bisect the angles of a rhombus.We are given two sides of the rhombus BC and CD. According to the first property:
4x + 15 = 7x + 2
Subtracting 4x:
15 = 3x + 2
Subtracting 2:
13 = 3x
Dividing by 3:
It's required to find the side AB. Applying the first property again:
AB= BC = CD = 4x + 15