
In other words, how many ways are there to choose

objects from a total of

objects? Just one; take all of them at the same time.
The triangle must be isosceles, due to the perpendicular bisector. Therefore, the expression 20 - 15 can be used to yield an answer of B. 5.
Hope this helps!
I belive its 18cm,,,,,,,,,,,,,,,,,,,,,,,,,,,,
90 because there are 5 time as many candies with nuts as candies without nuts and there is 18 so it will be 18×5=90