For the first;
For every four marbles, Izuku placed 2x more in the jar.
Answer:
√s(s-a) (s-b) (s-c)
Step-by-step explanation:
123456
herons formula
We have
-9 + 7 = -2
You can also rewrite this as
7 - 9 = -2
If it makes you more comfortable.
Hope this helps.
