kaydrama2003
07.10.2019 •
Mathematics
10x+36-38x-47 how do u add/subtract numbera that dont have a x when te others do
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Ответ:
10x+36-38x-47
10x+38x=36-47
First do 10x+38x=?
then 36-47=?
After this u will get both sides divide the side of x by the two
Ответ:
a = 49°
Step-by-step explanation:
OB = OC ( both radii of the circle ), thus
Δ BOC is isosceles and the base angles are congruent, that is
∠ OBC = ∠ OCB = 41° , so
∠ BOC = 180° - (2 × 41)° = 180° - 82° = 98°
The angle on the circumference BAC is half the angle at the centre for angles subtended on the same arc , thus
a = 0.5 × 98° = 49°