When can a probability tree diagram be useful?

John bought 5 lemons and used 2 of them for a salad how much did he use for.a salad . he used % of the lemons.

Gail is making costumes for a school play. each rabbit costume needs one and one half yards of white fur fabric, a yard of blue striped fabric, and a quarter of a yard of pink felt for the ears. g? ail needs to make eight rabbit man yards will she need, for the white fur fabric, blue striped fabric, and pink felt?

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*