There are 461 students and 20 teachers taking buses on a trip to a museum. Each bus can seat a maximum of 52 people. What is the least number of buses needed for the trip?

When keisha installed a fence along the 200 foot perimeter of her rectangular back yard, she left an opening for a gate.in the diagram below, she used x to represent the length in feet of the gate? what is the value? a. 10 b. 20 c. 25 d. 30

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if