An education researcher randomly selected 48 middle schools from across the country and interviews every teacher of the selected schools. Which sampling method did he use?

Two of the angle of a triangle measure 74 and 66. if the side opposite the 74 angle is 25 feet in length, how long is the shortest side? Round your answer to the nearest tenth of a foot.

Square root 6+x squared=14

On every 3rd day Ivan goes to the gym to exercise. Every 5th day Gavin goes to the gym to exercise. What is the first day Ivan and Gavin will go to the gym at the same time?

What distance is travelled in 15min at 72km/h

The number of people infected by a virus doubles every nine days. By how much will the number of infected people grow in 45 days

What x-value makes the set of ratios equivalent? 2 : 3 = 6 : x 4 : 7 = x : 42 2x : 48 = 3 : 12 12 : 15 = x : 20

Robert has 8 marbles, and Taylor has 12 more marbles tan Robert. what is the simplified ratio for Robert's marbles to Taylor's marbles?

Is this question true or false 11=√101

Is the number 0.0 6382978728 terminate or repeat

True or False-Four measurable properties of matter are mass, weight, volume, and pressure.