In a certain school,260 students were present on monday ,270 on tuesday,280 on wednesday, and 250 on thursday. find the average number of students present on those four days

There are an average of 265 students present.

Step-by-step explanation:

265

Step-by-step explanation:

calculate the mean/average by adding 260 + 270 + 280 + 250

(which is 1,060)

then divide that by 4 (the number of numbers)

1,060 ÷ 4 = 265

option 1 is correct.

step-by-step explanation:

y varies inversely with x and constant of variation is 4

the equation will be:

y = k/x

where k =4 so,

y = 4/x

if we put values of x of option 1 in the above equation and find values of y

y = 4/-2 => y =-2

y = 4/-1 => y = -4

y = 4/1 => y = 4

y = 4/2 => y =2

so, all the values of x and y are correct.

if we put values of x given in other options and find value of y we cannot find whole table satisfying the equation.

hence option 1 is correct.

70,000 + 6,000 + 800 + 30

step-by-step explanation: