Answer:
10 adults
Step-by-step explanation:
1 adult per 6 children
there already 1 adult per class so 6 children from each class are covered
24 - 6 = 18
26 - 6 =20
28 - 6 = 22
18 + 20 + 22 = 60
60 ÷ 6 = 10
so 10 more adults are needed
10f-30g
we have:
5(2f - 6g)
we apply distributive property:
5*2f+5*(-6g)
finally we have:
try number 4 I thinks its that one or number 1
121.5
Find the mean of the last 4 numbers.