Ánh xạ f nào sau đây không là ánh xạ tuyến tính a. f(x₁,x₂) = (x₁,x₂)

b. f(x₁,x₂) = (0,0)
c. f(x₁,x₂) = (x₂,x₁)
d. f(x₁,x₂) = (1,2)

An eight-sided die, which may or may not be a fair die, has four colors on it; you have been tossing the die for an hour and have recorded the color rolled for each toss. what is the probability you will roll a brown on your next toss of the die? express your answer as a simplified fraction or a decimal rounded to four decimal places.

Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?

The solution set for 5v2 – 125 = 0 is