There is a bag with only red marbles and blue marbles. The probability of randomly choosing a red marble is
5/8
There are 56 marbles in total in the bag and each is equally likely to be chosen.
Work out how many red marbles there must be.

35 red marbles

Step-by-step explanation:

The probability of choosing a red marble is 5/8 which means that the number of red marbles is 5/8 of the total number of marbles in the bag. so to work this out;

=  

= 5 * 7

= 35 red marbles

x=17

step-by-step explanation:

solve 3x-24=x+10

then that makes it 2x=34 because you subtract an x from both sides to get rid of the one on the right, and then you add 24 to both sides to get rid of the 24 on the left

divide by both sides by 2 to get your answer so that you can get your answer

a. she will receive a refund of $278.

step-by-step explanation: