The han dynasty lasted 215 years old
25/25 is equal to 1 whole. 3/4 x 1 is 3/4
3/4=?/100 : to get from 4 to 100 you x by 25. you then have to multiply 25 by 3 which gives you 75 which makes it 75/100 which can be simplified into 3/4
SIn J = 10sin102/17 = 0.575
arcsin 0.575 = 35.1 = 35 degrees

5x -2y = -10 .....1
3x + 6y =66......2
on multiplying eq. 1 by 3
5x -2y = -10 .....1 ×3
15x -6y =-30
now subtract both equations ,
15x -6y =-30
3x + 6y =66
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12x =-96
x= -8.
putting value of x in eq 1
5×8 -2y =-10
40 -2y =-10
40-10=2y
50=2y
25=y.