The difference of two numbers, a and b, is 21. the difference of 5 times a and two times b is 18. what are the values of a and b? a. 4, 1 b. -19, 40 c. 20, 1 d. 30, 9 e. -8, -29 i will give the brainleist and a like to the right answer

I believe the answer you are looking for is E

Step-by-step explanation:

a - b = 21  

5a - 2b = 18

2a + 2b = -42

5a - 2b = 18      

5a - 2a = 18 - 42

3a = -24  

a = -8

a - b = 21

-8 - b = 21

-b = 29

b = -29

i dont know

step-by-step explanation:

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: