The correct answer is - B. Rhyolitic.
The rhyolitic magma has a trademark signature to be the magma type that causes the most catastrophic, powerful, explosive volcanic eruptions. This is due to the composition of the magma. This type of magma is very high in silica content, which in turn makes it very viscous, and because it is very viscous, the high amount of gasses that it contains remain trapped in it, the pressure is building up inside of it, so when it reaches the surface it is highly explosive.
Answer: Yes, what you put is correct...
Explanation: Icelandic houses are built out of wood with grass growing over them, whereas Vietnamese homes are typically built minimally using reeds, etc. The main difference is that where the grass insulates from the cold (I’ve been in one and they really work!) the houses in Vietnam are built to keep all occupants as cool as possible.
Answer:
For b. 11*3x = 33x
For c. (3x-4)(11x-2) = 
Explanation:
For b. Since it is a rectangular the A = l*w
w = 11 & l = 3x => A = 11*3x = 33x
For c. Since it is a square we could assume that the A =
a side squared (since they all have the same length) but to be on the safe side, we'll assume it is not a square and do the math of multiplying one side by another (just like for a rectangle)
Side up = 3x + (-4) = 3x-4
Side left = 11x + (-2) = 11x-2
Side up * Side left = (3x-4)(11x-2) = 
If AE is x+50 then the whole thing must be x=50, If a portion of that, CE, is x+32, then the rest of it, AC, must be x+18, because no matter what X is, 32+18=50.
Hopes this helps mate :)
Until recently, Sudan and South Sudan were a unified country. Africa is mainly known for its diversity of wildlife, but there is more to be known about this continent than its wildlife. There are certain political issues in some parts of the continent that require the world’s attention. Sudan and South Sudan are such parts of the continent which one should understand.