Katy has a bag of yellow and red balls. there are a total of 30 balls in the bag. the probability of drawing a yellow ball is 1/6. how many red balls should be removed from the bag in order to increase the probability to 1/3?

the answer choices are:
a)5
b)9
c)10
d)12
e)15

The formula for the volume of a rectangular prism is v = lwh. a rectangular prism has a length of 2y 3 and width of 5y. the volume of the prism is 20y 10 + 70y 4 . what is the height of the prism? show your work.

The mean of a set of data is -3.82 and its standard deviation is 2.31. find the z score for a value of 3.99.

Idont understand math at all! : o( use this scenario to answer the remaining questions: brenton purchased a new bedroom set for $4,500.00. he lives in arizona and pays a 8.75% sales tax. if he made a 50% down payment and financed the rest, what amount did he finance? what is the total sales tax brenton will pay? enter your answer in currency format, round to the nearest cent. what was brenton's total amount financed? enter your answer in currency format, round to the nearest cent.