2x^4-5x^3+53x^2-125x+75=0

Asphere has a diameter of 10 in. what is the volume of the sphere?

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

The evening newspaper is delivered at a random time between 5: 30 and 6: 30 pm. dinner is at a random time between 6: 00 and 7: 00 pm. each spinner is spun 30 times and the newspaper arrived 19 times before dinner. determine the experimental probability of the newspaper arriving before dinner.