erinkiing
28.01.2020 •
Mathematics
Aquadrilateral is inscribed in a circle. it's vertices divide the circle into four consecutive arcs in the ratio 1: 2: 5: 4. find the angles of the quadrilateral.
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Ответ:
This is because you can add 14 to the sum of their ages 7yrs ago to find out the sum of their ages now. This is 27.
18 + 9 = 27 (9 x 2 = 18) (this is now)
And to double check : (7yrs ago)
18 - 7 = 11 9 - 7 = 2
11 + 2 = 13