5.A student polls randomly-selected students in his school to see what kinds if music they like. What type of study is described? a cluster study
an observational study
an experiment
a sample survey

In djkl, side jk measures 10.6 inches, side kl measures 7 inches, and side jl measures 5 inches. based on the information that is provided, which could be a correct set of angle measures for these sides? angle j = 23.2°, angle k = 33.5°, angle l = 23.2° angle j = 23.2°, angle k = 33.5°, angle l = 123.2° angle j = 123.2°, angle k = 23.2°, angle l = 33.5° angle j = 33.5°, angle k = 23.2°, angle l = 123.2°

Which of the following properties can be used to show

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?