Answer:
Quartz
Explanation:
<u>Quartz is a resistant mineral whose hardness is 7, according to the Mohr's hardness scale</u>. It is made up of silicon and oxygen and very abundant on the earth's continental crust, after feldspar. It is a very hard mineral that crystallizes in the hexagonal system.
<u>It cannot be scratched by a copper penny and also cleavage is absent. They are the most stable rocks that resist weathering and erosion</u>.
Thus, it is a very important mineral that forms the majority of sedimentary igneous and metamorphic type of rocks.
Explanation:
(f o g)(x)
= f[g(x)]
= f(3x + 7)
= 5(3x + 7) - 4
= 15x + 31.
When (f o g)(k) = 7, 15k + 31 = 7.
=> 15k = -24, k = -8/5 = -1.6.
Answer:
The rust belt of the united states would be a formal area do to the whole area all being swing states, or that they were all specialized in iron and steel production in before the 1970's.
Explanation:
A formal region is an area inhabited by people who have one or more characteristics in common. Shared characteristics may be a common language, economic activities, such as a particular crop production, or physical characteristics, such as the climate of an area. Some formal regions have distinct boundaries which make them easy to identify, such as counties or states. Examples of formal regions are Europe, Africa, United States, and Canada.
Based on the contour intervals given, the feature that is most likely seen in these topographical maps is A. Streams.
<h3>What feature is on the topographical map?</h3>
Streams generally flow in over gentle elevations which means that the contour intervals are generally spread out and are 50 m or less.
The contour interval here is 50m which means that the most likely feature would be a stream.
Find out more on topographical maps at brainly.com/question/1026002.
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Special triangles tell us that: 45-45-90 angles mean side ratios of 1-1-sqrt2, 30-60-90 angles have side ratios of 1-sqrt3-2.
Beginning from the upper-left corner and working clockwise:
The first side is a 45-45-90 triangle with legs of 24 in, so the hypotenuse is 24sqrt2.
The upper-right triangle is a 30-60-90, and the side opposite 30 degrees has length 24, so the hypotenuse is twice that, which is 48.
The right side is just x = 24.
The remaining three sides are identical to the first three (one from a 45-45-90 hypotenuse, another a 30-60-90 hypotenuse, and the last equal to x).
So the total perimeter is 24sqrt2 + 48 + 24 + 24sqrt2 + 48 + 24 = 144 + 48sqrt2 inches. This is choice D.