Em um triângulo ABC o vértice A tem coordenadas (2, -1) e a reta suporte do lado BC tem equação x + 2y + 20 = 0. Nessas condições a altura relativa ao lado BC é: a) 4√3
b) √5
c) 4√2
d) 2√5
e) 4√5

Phyllis and chen are saving money to go to a football game. each friend starts with some money and saves a specific amount each week. phyllis made a graph to show the total she has saved at the end of each week. chen wrote an equation to show the total, y, he has saved at the end of each week, x. y = 15x + 15 compare the amount that each friend has when both friends start saving. select the correct answer from the drop-down menu to complete the statement. phyllis starts with $ and chen starts with $

Someone me what is the area of this figure? 18m 18m 8m 16m

The scatter plot shows the number of animal cells clara examined in a laboratory in different months: plot ordered pairs 1, 20 and 2, 60 and 3,100 and 4, 140 and 5, 180 what is the approximate predicted number of animal cells clara examined in the 9th month?