To determine how a city's residents feel about building a new youth center, a group considers surveying 50 random
children at a local elementary school. Why would this result in a biased sample? Select three answers.
The sample ignores the adult portion of the city's residents.
The students were randomly chosen.
Children are probably more likely to be in favor of a new youth center.
Some students may not have an opinion,
The sample does not include children in middle school or high school.

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answer: a

step-by-step explanation: the answer is a due to the rule of symmetry; that a line of symmetry must divide a figure into 2 pieces that are the exact same, only reflected over a line of symmetry. b and c do not have lines of symmetry and would not divide the figure evenly, thus making the answer a.

add them

step-by-step explanation:

idk you did not give the options or numbers so you cant solve it

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

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