I will give brainliest and 50 points pls help ASP pls can u show how to work this out thx !!! : )
its a simultaneous equation

x = 3

y = -2

Step-by-step explanation:

Given:

8x - 3y = 30 (1)

3x + y = 7 (2)

Eliminate y by adding (1)+3*(2)

8x-3y + 3*( 3x+y) = 30 + 3*7

8x + 9x -3y + 3y = 51

17x = 51

x = 3  (3)

substitute (3) in (2)

3(3) + y = 7

y = 7-9 = -2

y = -2 (4)

amount of oatypop that contains the prize = 40%

amount   of oatypop which doesn't contain the prize = (100-40)=60%

probability that hannah will win a prize

    = s +f s +f f s+ff   f s+ff f f s+ infinity.where f= failure,s= success

=   or 60%

probability that hannah only has to buy 3 or less boxes before getting a prize= (s) and ( f s) and (ff s) and (f f f s)

        = = 87.04 %  

step-by-step explanation:

d no solution

step-by-step explanation: