each student in ali’s class ran 1/4 of a mile. there are 36 students in the class. how many miles did the students run altogether?

9 miles.

Step-by-step explanation:

If you multiply 36 by 0.25 (1/4 as a decimal), you get 9. So the class altogether ran 9 miles.

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!

= 5

step-by-step explanation:

to find the 15th term substitute n = 15 into the nth term formula

= (- 3 × 15 ) + 50 = - 45 + 50 = 5