What is the area of a triangle whose vertices are r(-4,2),s(1,2), and t(-5,-4)

The answer to your question is 30 u²

Step-by-step explanation:

Vertices

R(-4, 2)

S (1, 2)

T (-5, -4)

Find the area using matrices            X    Y

                                          R             -4     2

                                          S              1     2

                                          T             -5   -4

                                          R             -4    2

                                  =| (-4 x 2) + (1 x -4) + (-5 x 2) - [(-4 x -4) + (-5 x 2) + (1 x 2)]|

                                  = |-8 - 4 - 10 - [ 16 - 10 + 2]|

                                  = |-22 - [ 8]|

                                  = |-22 - 8|

                                  = |-30|

                                 = |-30|

Area =                          30 u²                                  

answer: the 4 kilogram bag

step-by-step explanation: this is because if you divide the number of kilograms into the total it will tell you how much each individual kilogram would be worth. 2 kilos is 7 and change 3 would be around 6 ish and the 4 kilo would be 4.6 and change and the 5 kilos would be like 4.88

(3x-8) or (3x+8)

step-by-step explanation: