The answer is the last choice 2 1/2
Answer:
(1, 1) (1, 2) (1, 3) (1,4)
(1,5) (2,1) (2,2) (2,3)
(2,4) (3,1) (3,2) (3,3)
(4,1) (4,2) (5,1)
Step-by-step explanation:
<span>Find
the speed of each car.
Let a be the first car
Let b be the second car
=> a = x miles per hour
=> b = x + 12 miles per hour
=> 2 (x+ x + 12) = 232 miles per hour
=> 2x + 12 = 232
=> 2x + 12 = 116
=> 2x = 116 - 12
=> 2x / 2 = 104 / 2
=> x = 52 (speed of Car A)
=> 52 + 12 = 64 miles per hour (speed of Car B)</span>
Answer:
Divide 63/9=7
7*2= (the number of teachers) 14
There are 14 teachers for 63 students.