You want to determine whether residents in your neighborhood support the construction of a new baseball field. You survey the residents of every fourth house. Identify the type of sample used.

A:random sample

B:self-selected sample

C:systematic sample

D:stratified sample

E:cluster sample

F:convenience sample

Me n o w. i need t h i s. 10 points

Awater tank holds 18000 gallons. how long will it take for the water level to reach 6000 gallons if the water is used at anaverage rate of 450 gallons per day

Uestion 1(multiple choice worth 5 points) (05.02)alex wants to paint one side of his skateboard ramp with glow-in-the-dark paint, but he needs to know how much area he is painting. calculate the area of the isosceles trapezoid. isosceles trapezoid with top base 12 feet, bottom base of 18 feet, and height of 6 feet. 72 ft2 84 ft2 90 ft2 108 ft2