The totally clean toothpaste company advertises that 9/10 of all people surveyed prefer their toothpaste what percent of people surveyed prefer totally clean toothpaste

What is the missing step in this proof ?

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2

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.