There is a bag with only red marbles and blue marbles. The probability of randomly choosing a red marble is
5/7
.
There are 30 red marbles in the bag and each is equally likely to be chosen.
Work out how many marbles in total there must be.

What are the solution(s) to the quadratic equation x2 – 25 = 0? o x = 5 and x = -5ox=25 and x = -25o x = 125 and x = -125o no real solution

Girardo is using the model below to solve the equation . girardo uses the following steps: step 1 add 4 negative x-tiles to both sides step 2 add 1 negative unit tile to both sides step 3 the solution is which step could be adjusted so that gerardo's final step results in a positive x-value? in step 1, he should have added 4 positive x-tiles to both sides. in step 1, he should have added 3 negative x-tiles to both sides. in step 2, he should have added 4 negative unit tiles to both sides. in step 2, he should have added 1 positive unit tile to both sides.

The zoo collects $9.60 for every 24 tickets sold. how much will be collected for 400 tickets?