after Sofia deposited a check for 52.80, her new account balance was 310.63 how much was in her account before she deposited

$257.83

Step-by-step explanation:

Subtract like shown below

310.63 - 52.80 = 257.83

We subtract because we are finding the total amount of money before the deposit.

Hope that helps and have a great day!

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:

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify