hai người cùng ứng tuyển vào một công ty. gọi Ai= "người thứ i trúng tuyển", i= 1,2 diễn tả những biến cố sau

An appliance salesman sets a goal to sell an average of 6 appliances per day for the first two weeks of his new job. the dot plot shows the number he sold each day during the first 13 days. what is the minimum number of appliances he must sell on the 14th day in order to reach his goal? a) 5 b) 6 c) 7 d) 8

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

Find the value of x. give reasons to justify your solutions! l, m ∈ kn