If 3/4 of a ton of sand covers 2/5 of a playground, how many tons of sand are required to cover the entire playground

Rai compares two cable plans from different companies. which equation gives the correct value of mm, the number of months for which plans a and b cost the same?

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics

What is the gcf of 20c^3-5c^4+30c^6