What is meant by the statement "every metamorphic rock has a parent rock"? view available hint(s)
a) all metamorphic rocks are created only through the change of preexisting rock.
b) all metamorphic rocks form from the cooling of previously melted rock.
c) metamorphic rocks share no similarities with the original material from which they formed.
d) all metamorphic rocks are created only from previous metamorphic rocks.
e) all metamorphic rocks are created only through accumulation of pieces of previously existing rocks.

There is no map, maybe give the link, it may be b

Ibelieve it is- a mixed economy offers some protection for consumer rights but still allows a good deal of choice.

Ithink the answer is either a , c or d

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.