Race organizers want to survey the participating runners on the quality of the running course. Which of the following uses systematic random sampling?
Select the first 15 finishers and the last 15 finishers to take the survey.
Randomly select 15% of the male participants and 15% of the female participants.
Select the 5th finisher (with the number 5 being randomly chosen) to survey, then survey every 15th finisher after
that.
Sort all of the runners' names alphabetically, then randomly choose 2 letters and survey all participants whose
last name begins with one of those letters.

idk u tell me

step-by-step explanation:

the answer is 5/14.

hope this .

the area of a triangle is determined by the formula: base x height * 1/2

you'll need to assign a base to the triangle. based on the vertices given, the simplest base would be the line segment from (-2,1) to (2,1). the distance between any two numbers is found by just subtracting them. here, you should subtract the x values to find the distance of this side.

2 - (-2) = 4.

so the distance (aka the length of the base) is 4. the height of the triangle is the distance between the base and the highest point on the triangle which is (3,4). we should subtract the y values this time to find the height/distance.

4 - 1 = 3

so the height is 3.

base = 4

height = 3

hope this if needed hmu