Carlos has scored 83, 81, and 73 on his previous three tests. what score does he need on his next test so that his average (mean) is 83 ?

95

Step-by-step explanation:

let x be his mark in the fourth test, then

mean = = 83 ( multiply both sides by 4 )

83 + 81 + 73 + x = 332

237 + x = 332 ( subtract 237 from both sides )

x = 95

answer: he is 272195

step-by-step explanation: all you have to do is multiple 3535 and 77 and it equals 272195

9x