20 the following table shows the number of students in a class who participate in art and sports: participate in art do not participate in art total participate in sports 40 ? 70 do not participate in sports 10 5 15 total 50 35 85 what is the missing number in the table?

You are asked to find the missing value in

... 40 + ? = 70

given that it is also the solution to

... ? + 5 = 35

Either way, you subtract the constant that is on the same side of the equation as the unknown.

... 40 + ? - 40 = 70 - 40

... ? = 30 . . . . the missing value

You can check to see if this also satisfies the equation

... 30 + 5 = 35 . . . . . . . true

i use my brain for prombles like this maybe you could try it

step-by-step explanation:

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed