Answer:
C
Step-by-step explanation:
You can let y for the inverse
Like
X =5y - 11
Then you will get
X+11=5y
Then x+11/5=y
It cost £18.you find out how much 2 cakes cost which is £6. then you do £12+£6(sorry if wrong)
Answer: 8(x + (-5)) = 2x
Step-by-step explanation: Lets have that "certain" number be x. We wrote an equation to represent the problem.
Answer:
Distinct ways in which they all can form the teams for the class = n(n-1)
Step-by-step explanation:
Total numbers of students = n (even number)
Number of student in each team = 2
Number of distinct ways are there to form the teams for the class:

where = n = number of elements = n
k = number of elements choose = 2


Answer:
sorry didnt mean to answer
edit: it should be around 45