Answer:
4 x 1 = 4 x 3 = 12 = 4 x 3
Step-by-step explanation:
sorry I'm having trouble with this too
Answer:

Step-by-step explanation:

We have

Substitute:

Answer:
Each of the 7 friends could be present or not present (2 cases) at the party giving total of 27 scenarios.
Since at least one must be present we exclude the case that none of them is present. So the answer would be:
27−1=127.
Step-by-step explanation:
i actually dont know but can you report me and dont ask
Answer:
x(5x²-7)
Step-by-step explanation:
5x³-7x
=x(5x²-7)
To prove your answer,let's multiply x by each term in the bracket
=x X 5x²=5x³
x X -7 =-7x