Using the variable x for the unknown number,
20 - (x + 4) = 6
is your answer!
Hope I helped :)
Answer:
17m
Step-by-step explanation:
Add up 4m and 4.5m. 8.5
Multiply that number by 2. 17
20 possibilities based on this as a combination not a permutation, 6 nCr 3 = 20
Answer:
15 pizzas.
Step-by-step explanation:
The rate is 3 pizzas for every 7 people. If there are 35 people at the party (7 times 5), the amount of pizzas you should buy is 15 pizzas (3 times 5). Hope I explained that well (^^'')
