3) Which dot plot has the least number of sites represented?
Zebra Mussel
7
Callco Crayfish
Number of Si
Number of Sites
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
Number of Zebra Mussel
Number of Calico Crayfish
Blueback Herring
Shield Darter
Number of Sites
Number of Sites
T
3 4 5 6 7 8 9
1
2
10
3
4
5
6
7
8
9
1
10
2
Number of Blueback Herring
Number of Shield Darter

answer: median

step-by-step explanation:

the median is the middle value when a data set is ordered from least to greatest

18 units²

step-by-step explanation:

first let's find altitude bd using the distance formula

d = √((y₂ - y₁)² + (x₂ - x₁)²)

bd = √((0 - -3)² + (0 - 3)²)

bd = √18

given the placement of points a and c, we can denote that point d bisects segment ac.

we will call ac the base.

using the distance formula

ac = √((0 - 6)² + (-6 - 0)²)

ac = √72

knowing our base and our height, we can plug these into our triangle area formula

area = (b * h)/2

area = (√18 * √72) / 2

area = (√1296) / 2

area = 36 / 2

area = 18 units²