Simplify and write without negative powers: i) 2a^2b^-3 ii) (10x^2y^-4 )/(5x^-3y^-1)

step-by-step explanation:

y = | -2(-2) |     →     y = | 4 |     →     y = 4       ⇒   (-2, 4)

y = | -2(-1) |     →     y = | 2 |     →       y =   2       ⇒   (-1, 2)    

y = | -2(0) |     →     y = | 0 |     →       y = 0         ⇒   (0, 0)

y = | -2(1) |   c →     y = | -2 |     →     y =   2         ⇒   (1, 2)    

y = | -2(2) |     →     y = | - 4 |     →     y =   4         ⇒   (2, 4)  

b

step-by-step explanation:

u take $75 minus $60.the anwer/original($75)multiply by 100

8.3 and the 3 is repeating

hope this .

93-8=85

855=17

17*4=68

there are 68 purple marbles in that bag