In 1980 Mount St. Helens in Washington state erupted. What were some of the destructive forces that occurred. A. Over a billion feet of the top of this mountain blew offand toxic gas killed everyone in the state of Washington aloong with plants and animals.

B. a Tsunami wiped out San Fransisco

C. A nearby glacier melted and flooded the area, killing additional humans and animals.

D. Over a thousand feet of the top of the mountain was obliterated, causing darkness during the day for towns up to 85 miles away, mudslides and large ask deposits, loss of life to humans and animals

Summer months are the wettest.

In a right-angled triangle: 1- the hypotenuse is the longest side2- we can apply pythagorean rule which states that: (hypotenuse)^2 = (side1)^2 + (side2)^2for the given triangle,longest side is 15 cm  side1 = 9 cmside2 is 12 cm  to check whether the triangle is right-angled or not,compare (15)^2 to the summation of (9)^2 and (12)^in other words, compare 225 to the summation of 81 and 144if they are both equal, then the triangle is right-angles, otherwise, it is not.you haven't provided the diagram showing her work, so i cannot tell the choice. however, apply my explanation to the question you have.