GEOGRAPHY HIGH SCHOOL

A right triangle has a hypotenuse c = 12.6 and a leg b = 8.5. What is the approximate length of leg a?

Answers

Answer 1
Answer:

This problem can use the Pythagorean theorem of c2 = a2 + b2 where c is the length of the hypotenuse, b is the length of the longer side and a is the length of the shorter side. Plugging in the values of c and b 12.6^2 = 8.5^2 + a2, the value of the shorter side is equal to 9.3.

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Depending on its mass, it can take millions to trillions of years for a star to evolve from a main-sequence star to a red giant. Despite this astronomical length of time, astronomers are confident in their models of stellar evolution. Which of the following statements best describe why astronomers firmly believe that their models of stellar evolution are correct?

Answers

Answer: See explanation.

Explanation:

Because Astronomers have well-tested theoretical models that explain how a star evolves over the course of its life as well as well-tested theoretical models that explain how a star evolves over the course of its life.

How large is the sun and what is it's mass?

Answers


The total volume of the sun is 1.4 x 1027 cubic meters. About 1.3 million Earths could fit inside the sun. The mass of the sun is 1.989 x 1030kilograms, about 333,000 times the mass of the Earth.
The mass of the sun is 1.989 × 10^30 kg. 

In 1977 the Richardson family, tired of the congestion and crime associated with urban life, moved from their townhouse located in the middle of the city to the suburbs. Which of the following terms describes this behavior?urbanization

zoning

urban planning

urban flight

Answers

When the Richardson family moved from their city townhouse to the suburbs it was called urbanization. This happens when people get tired of living with crime and to much congestion in the city. 

Answer:

urbanization

I hope this helps

What are properties of a mineral?

Answers

Answer:

Colour , hardness and the cleavage and the uster and many more.

Explanation:

  • A mineral is  a naturally occurring substance that is inorganic and has definite chemical and internal composition and is thus the important properties that are included in the material are Color , Reaction to dilute acid , Magnetism , Presence of striations , Density , Odor,  Feel .
  • The cleavage is the physical properties that relate to recognize and describe so be patient until you learn to see the pattern. The hardness is described in terms of the relative moho density scale. And luster is the specif property related to the shiny of the crystal and there color and surface area a result of the composition and density of the rocks forming matter.  
There are approximately 4000 different minerals and each of those minerals has a unique set of physical properties. These include: color, streak, hardness, luster, diaphaneity, specific gravity, cleavage, fracture, magnetism, solubility and many more. These physical properties are useful for identifying minerals.

Which of the following products is not derived from oil (petroleum)?a. concrete
b. kerosene
c. gasoline
d. plastics

Answers

Concrete is not derived from oil (petroleum). The appropriate response is option A.

What is Concrete ?

Concrete is a composite material made of fine and coarse aggregate that is joined by a flowable cement that eventually becomes hard. Concrete is the most often used building material and the second most utilized substance in the world after water.

Concrete is created without the use of petroleum and is formed of water, aggregate (such as rock, sand, or gravel), and Portland cement. Concrete is a mixture of particles that are tightly linked together and an industrial material that mimics the characteristics of rock.

A few examples of petroleum products are gasoline, distillates including heating oil and diesel, jet fuel, petrochemical feedstocks, wax, and asphalt.

The appropriate response is option A.

To learn more about petroleum products

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Answer: A. Concrete

Explanation:

Concrete is made of water, aggregate (rock, sand, or gravel) and Portland cement, and does not have petroleum

Hormigon es hecho con agua, agregados (roca, arena o grava) y cemento Portland, pero no tiene petróleo.

I am really worried tomorrow we have a test in world geography and are teacher taught us almost nothing this whole unit! whats should i do she said the the test should be over cultures and religion???plz help i cannot afford to fail this test! What do you think is the right thing to do to be prepared??Thanks

Answers

OK> well, first, memorize the countries. then use the map to test urself.I hpe u get a good geade!
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