There are 40 students that play a wind instrument in the
band, which is 80% who are in the band. How many
students are in the band?

50 students are in the band

Step-by-step explanation:

If 40 students is equal to 80% of the band, then we can represent this as an equation.

40 = 0.8y

y = total number of students in the band

in order to solve this equation, we have to divide both sides to isolate the y.

40/0.8 = y

Solve

50 = y

We can check to make sure that this is correct by putting to answer back into the equation.

40 = 0.8(50)

40 = 40

8 2/3 is the answer

step-by-step explanation: just use a calculator

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.