5x + y =22 3x + y= 12 solve by elimination steps

(5, -3)

Step-by-step explanation:

Elimination is also sometimes called 'subtraction' method

Subtract the second equation form the first equation...

  5x + y = 22

-

  3x + y = 12

The result is

 2x = 10        (5x - 3x = 2x, y - y = 0, 22 - 12 = 10)

Now solve for x...

  x = 5          (divide by 2 on both sides)

Now that we know x = 5, plug that into either equation to solve for y...

5(5) + y = 22

  25 + y = 22

        y = -3

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: