Answer:
23.1°
Explanation:
A triangle is a polygon with three sides and three angles. Types of triangles are scalene, acute, obtuse, isosceles, equilateral and right angled triangle.
A right angled triangle is a triangle with one angle equal to 90 degrees. The longest side of a right angled triangle is known as the hypotenuse. Trigonometric identities is used to show the relationship between the angles and sides of a right angled triangle, i.e.:
sinθ = opposite/hypotenuse; cosθ = adjacent / hypotenuse; tanθ = opposite / adjacent
From the question, a right angled triangle is formed. The hypotenuse = length of guide wire = 25 ft, height of triangle = height of sapling, base of triangle = distance from the end of the wire to the base = 23 ft.
Let θ be the angle of elevation. Hence:
cosθ = 23 ft / 25 ft
cosθ = 0.92
θ = cos⁻¹(0.92) = 23.1°
explain one reason why some areas are arid(have low rainfall) [2 marks]
Answer:
Some places are arid because they are on the leeward side of the mountain and fall in the shadow region. The mountain's windward side gets all the rainfall and the other side has very little.
Explanation:
Hope this helps! have a great day :)
Some areas are arid because they are usually very hot and dry.
What is an arid region?An arid area is a place where water is not available.
The unavailability of water has hindered many lives including plants and animal from surviving in such area.
Desert are called arid region because they lack water.
Therefore, Some areas are arid because they are usually very hot and dry.
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Which cycle has been significantly altered by humans and is of great concern because of its implications for global warming?
Answer:
i think its the nitrogen cycle
People first saw the earth from above in a __________
Answer:
On July 16, 1969, Apollo 11 crew members became some of the first people to look down at Earth from space and take pictures of Earth.
So... they took the first pictures of Earth.
Explanation:
People first saw the earth from above in a Rocket.
After whites, the largest ethnic group in the United States The chart shows that about 30 percent of the US population is The smallest ethnic group listed v/D
Answer:
hispanic(red)
Explanation:
A cadet is able to walk 1km over flat ground in 15 mins. How long would it take him to cover a distance of 5km over similar terrain?
The cadet will take 75 minutes with the same speed of 4km/hour to cover a a distance of 5km over similar terrain.
What is speed?An object's speed is defined as the magnitude of its position change over time or the magnitude of its position change per unit of time. It is a scalar value. The average speed of an object in a given time interval is the distance travelled divided by the duration of the interval.
The speed of the cadet is calculated as :-
Speed = Distance ÷ Time,
where,
Distance = 1 km
Time = 15 mins or 1/4 hour
Speed = 1 ÷ 1/4
= 4 km/hour
∴ Time taken to cover a distance of 5km will be:-
Time = Distance ÷ Speed
= 5/4
= 1.25 hour or 75 mins.
Therefore, the cadet would take 75 minutes to cover a distance of 5 km.
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What took place during the Russian Revolution?
A. The communist state failed and was replaced by a democracy.
B. The Czar and his family were killed, and a new communist governme
was formed.
C. Revolutionaries declared independence on July 4th, 1776,
D. Russia fought to qain independence from surrounding countries
Answer:
B
Explanation:
It removed Russia from the war and brought about the transformation of the Russian Empire into the Union of Soviet Socialist Republics, replacing Russia's traditional monarchy with the world's first Communist state.
Which climates are primarily experienced in the Southwestern states of Arizona and New Mexico? Select three options arid semiarid Mediterranean humid subtropical marine west coast humid continental (warm)
Answer:
1. arid
2. semiarid
3. Mediterranean
Explanation:
The Southwestern states of Arizona and New Mexico are characterized by the following climates arid, semi-arid and Mediterranean.
This is evident where arid to semi-arid climates are found in places like Nevada, Arizona, West Texas, and the and so on where there are desert lands and mountains.
The Mediterranean climates in the region of southwestern are found in places like Wyoming, where there is a form of desert land but capable of experiencing high cold temperatures at night during winter.
Answer:
1: Arid
2: Semiarid
3: Humid continental (warm)
Explanation:
I took the test. Hope this helps!
Helppppppppp plzzz
I don’t understand plzzz help me out or explain it
Ask an adult the questions. In brackets are the actual answers
the world is____ and maps are ____ which is why they are not 100 % accurate
How have rivers and lakes been important to the economic development of the United States?
how did confilcts in society lead to independence for spain colonies
The way that the conflict that was in the society led to the independence was that the Napoleonic war between Spain and Napoleon made the Spanish colonies to begin to question the allegiance that they had to Spain.
What is the meaning of independence?This is the term that is used to refer to the freedom that nations would have to be able to have their own self rule, that is the nations that are being governed by other nations would have the liberty to be able to determine the ways that they would want to run the affairs of their own governments.
The Peninsular war that they had with France had made Napoleon to occupy Spain. This made the Creoles to begin to question the allegiance that they had to the Spanish people that were in their nations.
Hence the push and the fight for independence in all of these colonies of Spain.
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Different between mayan and hindi vigesimal or base-20 (base-score) numeral system is based on twenty (in the same way in which the decimal numeral system is based on ten). Vigesimal is derived from the Latin adjective vicesimus, meaning 'twentieth'. Contentsarabic in zero
The placement of the symbols used to represent numbers and their use in the Mayan and Hindi vigesimal numeral systems is one of the major difference.
The Hindi system uses digits and reads from left to right, whereas the Mayan system uses dots and bars and reads from bottom to top.
Both systems are based on the number 20 with the Hindi system using digits to represent 1 to 9 and a combination of digits to represent 10 to 19 and the Mayan system using a combination of dots and bars to represent 1 to 19. Both systems incorporate the zero concept, which is derived from the Arabic numeral system.
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Countries that are on the rise economically and growing in importance in the global economy but still have large numbers of the population living in poverty are considered __________ economies. A. core B. semi-periphery C. periphery D. external
Answer:
i believe it is (b.) semi-periphery
Explanation:
semi-periphery is in between periphery, or poor and less-developed, and core, or more highly developed and economically stable.
Answer:
b
Explanation:
List the set of all even numbers between 2 and 10, inclusive.
Answer:
the numbers are 2, 4, 6, 8, 10
what is africa’s expansive ecosystem of grasslands and savannas called?
Answer:
Serengeti is the answerrr
Which part of the map would be CLOSEST to both the West Bank AND the Gaza Strip?
A)1
B)2
C)3
D)4
Answer:
thanks. it's C) 3
Explanation:
thanks, I took on the test!
3 part of the map would be CLOSEST to both the West Bank AND the Gaza Strip. Thus option C is correct.
What is a map?A map is a visual depiction of specific features of a location, typically created on a smooth surface. Maps provide straightforward, visible information about the globe.
East Jerusalem, which is acknowledged as being a part of Palestinian territories and has had a portion of the route taken over by the Israeli government, is the location that was near the Gaza Strip and the West Strip.
These areas are referred to as the Palestinian territories that Israel occupies. The tensions that were created between Israel and the Palestinian National Authority. As there is various activity that was created that brings abruption in the country.
Therefore, option C is the correct option.
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What is a drainage basin/watershed/ river basin? Who lives in these?
(This is a typed out question)
Cite examples of changes brought about by a shift from rural to urban living.
pls help asap!!! ty :)
Answer:
As populations transition from rural to urban living, many social changes take place. For example, as people move to urban environments, they tend to live in closer proximity to each other. This presents problems when it comes to sanitation and hiegiene.
Explanation:
hope this helps
have a great day/night
Breifly describe some of the common problem of traditional methods of showing relief on a map
The common problem of traditional methods of showing relief on a map are of various types which are used by cartographers.
These relief are as follows;Spot heightsLayer tintsContour linesHill shadingLandform shadingWhat are contour Lines?In a standard topographic map, Contour lines are the most used or common traditional method of showing relief and elevation. Therefore, contour a line appears as an imaginary line or lines on the ground, above the ground or as well as vertical distance above or below sea level. Note, all points on the contour lines are at the same elevation.
What is Layer Tinting?A cartographer can also use Layer tinting as a traditional method of showing relief on a map by the use of color. The application of different color is used for each band of elevation solely.
Also, a cartographer use each shade of band or color, to represents a definite elevation range. A legend can therefore be printed on the map margin to illustrate the elevation range that is represented by each color. Nevertheless, this method is not permissible to allow the map user to determine the exact elevation of a specific point.
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Porque en la costa es occidental de Sudamérica hay muchos volcanes y se producen continuamente terremotos y sin embargo en la costa occidental de Africa es muy estable y no hay volcanes ni se producen terremotos
Translation- Because on the western coast of South America there are many volcanoes and earthquakes occur continuously, and yet on the western coast of Africa it is very stable and there are no volcanoes or earthquakes.
The boundaries of tectonic plates determine various geological features of the location, a areas geological activity is determined by its location and the tectonic plates inside the earth.
A region where multiple tectonic plates converge is known as the- Ring of Fire, and it includes the western coast of South America. When two plates collide, tectonic zones are formed, where one plate slides under the other and an earthquake or a volcano may result.
comparatively, there are no active tectonic plate boundaries near Africa's western coast. This region's stability can be result to its location on a stable tectonic plate.
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Justify the claim that metabolic pathways evolved on Earth by connecting environmental changes that occurred to their development.
The claim that metabolic pathways evolved on Earth can be justified by connecting environmental changes that occurred to their development.
As Earth's environment transformed over time, early life forms faced varying conditions, driving the evolution of metabolic pathways to adapt and optimize their chances of survival. Key environmental changes that influenced the development of metabolic pathways include the appearance of oxygen, fluctuations in nutrient availability, and shifts in temperature.
The Great Oxygenation Event, around 2.4 billion years ago, led to an increase in atmospheric oxygen. This forced early anaerobic organisms to develop aerobic respiration pathways to harness energy from the newly abundant oxygen while protecting themselves from oxidative stress.
Moreover, nutrient availability has played a significant role in shaping metabolic pathways. Fluctuations in the availability of essential elements, such as nitrogen and phosphorus, prompted life forms to evolve diverse metabolic strategies to access and utilize these resources efficiently.
Additionally, Earth's temperature has also experienced significant changes throughout its history. As the environment transitioned from hot to cold, or vice versa, organisms needed to adjust their metabolic pathways to optimize energy production and maintain homeostasis under different temperature conditions.
In conclusion, the development and evolution of metabolic pathways on Earth can be justified by considering the environmental changes that acted as driving forces for life forms to adapt and optimize their survival strategies.
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what are the coordinates of D’
Answer:
D' = (-2, -2)
Explanation:
When mirroring in the x-axis, only the y-coordinate is multiplied by -1 where as the x-coordinate remains the same.
If D = (-2, 2) and because 2 * -1 = -2, we can now write the coordinates of D'
D' = (-2, -2)
Where the Andes mountains are the widest-
A. Atacama
B. Altiplano
C. Orinoco
D. Madre
(right answer only!)
Answer:
B. Altiplano
Explanation:
Just took the quiz and got it right
What is the displacement of a fault?
Displacement, the separation between the offset marker's two ends, measured along the fault surface in the slip direction.
Over geologic time, most faults cause repeated displacements. The rock on one side of the fault abruptly slips in relation to the other during an earthquake. The fault surface may be vertical, horizontal, or at any other arbitrary angle.
The cumulative motion of the hanging wall over the footwall causes displacement even though slip along the fault changes instantly at the fault bend.
Extensional faults, regardless of their orientation with respect to the horizontal, cause the layers they cut to extend as a result of their displacement. Normal faults are dip-slip faults where the footwall and hanging wall have both descended relative to one another.
There are two types of displacement reactions namely Single displacement reaction and Double displacement reaction.
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now we know that current velocity, or energy, and sediment size are correlated. high velocities only allow large grains to settle out, and only low velocities can allow for very fine grains to settle out and be deposited. so, how do graded beds form? they must represent a transition from a high to low energy current because they possess a transition from large to small grains. turbidity currents are water currents that are heavy because they possess a high sediment concentration. they commonly start as slope failures in shallow marine settings like a lake or ocean margin, then travel down the sloped margin, eventually depositing their loads at the bottom where it flattens out. sediment layers deposited by these currents are called turbidites. in this activity, choose from statements about turbidity currents and graded-bed formation as exemplified in the gigapan image. read the following statements and select which are true. specifically, focus on the relationships between grain size and velocities in turbidity currents.
D Turbidity currents have high concentrations of sediments, making them heavy enough to travel down slopes coherently, even in marine environments.
E. In the Gigapan image, the sedimentary layers can be described as turbidites that were formed by repeated deposition of sediments from turbidity currents in a marine setting.
This outcrop was formed when turbidity currents repeatedly deposited sediments as individual layers in a marine setting. These layers then lithified into sedimentary rock. The rocks were later slightly deformed and metamorphosed and then brought to the surface by erosion for us to investigate.
Investigating the patterns, textures, and sedimentary structures within sedimentary rocks is one of the best ways to reconstruct past environmental conditions from the rock record. Sedimentary rocks that have undergone little to no deformation, like here, provide some of the most critical pieces of information that allow geologists to reconstruct the history and evolution of Earth’s near-surface conditions.
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Full Question : Now we know that current velocity, or energy, and sediment size are correlated. High velocities only allow large grains to settle out, and only low velocities can allow for very fine grains to settle out and be deposited. So, how do graded beds form? They must represent a transition from a high to low energy current because they possess a transition from large to small grains.
Turbidity currents are water currents that are heavy because they possess a high sediment concentration. They commonly start as slope failures in shallow marine settings like a lake or ocean margin, then travel down the sloped margin, eventually depositing their loads at the bottom where it flattens out. Sediment layers deposited by these currents are called turbidites. In this activity, choose from statements about turbidity currents and graded-bed formation as exemplified in the Gigapan image. Read the following statements and select which are true. Specifically, focus on the relationships between grain size and velocities in turbidity currents.
Select the two that apply.
a. Sedimentary rocks like these are made from mud only.
b. The fractures in the rock affected the way in which the sedimentary layers were deposited.
c. The sediments exposed in this outcrop were likely deposited in a single, massive turbidity current.
d. Turbidity currents have high concentrations of sediments, making them heavy enough to travel down slopes coherently, even in marine environments.
e. In the Gigapan image, the sedimentary layers can be described as turbidites that were formed by repeated deposition of sediments from turbidity currents in a marine setting.
Select all the correct statements about limestone and marble.
Choose one or more:
A) As limestone metamorphoses, calcite turns into quartz—the primary mineral in marble.
B) As limestone metamorphoses into marble, fossils, pore space, and cement disappears.
C) Fossils grow large as limestone metamorphoses into marble.
D) Marble is a uniform mass of interlocking calcite crystals.
E) Limestone is the protolith of marble.
As limestone metamorphoses, calcite turns into quartz—the primary mineral in marble. As limestone metamorphoses into marble, fossils, pore space, and cement disappears. Limestone is the protolith of marble. The correct answer is A, B, and E.
Limestone is primarily composed of the mineral calcite, which is made up of calcium carbonate. When limestone is subjected to high pressure and heat, the calcite can recrystallize and turn into the mineral quartz. Quartz is the primary mineral in marble, which is why marble is often considered a metamorphic version of limestone.
The process of metamorphosis also causes the fossils, pore space, and cement within limestone to disappear. This is because the high pressure and heat causes the minerals to recrystallize and the spaces between them to close.
Limestone is the protolith, or original rock, from which marble is formed. This means that marble is formed from the alteration of limestone through the process of metamorphism.
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which city is the capital of a large island nation in the indian ocean
Answer:
Mauritius, Port Louis
Explanation:
mauritius is an island-country in the indian ocean, and it's located very close to africa! it's located off the eastern coast of africa.
the capital of it is port louis
hope this helped :)
Which of the following pictures represents what people prior to the mid-
1800s thought the shape of the bottom of the Atlantic Ocean looked like?
A. B
B. A
C. D
D. C
Answer:The answer is B
Explanation:
The bottom of the Atlantic Ocean is S shaped and B is the closest to S shaped of the 4 pics, plus I just took a quiz with this question and B is the answer
Picture B represents what people prior to the mid-1800s thought the shape of the bottom of the Atlantic Ocean looked like. The fourth image's B form is the most similar to the S shape of the bottom of the Atlantic Ocean. Thus, option B is correct.
What is the importance of Atlantic ocean?The Atlantic Ocean, the second-largest ocean on Earth, regulates our weather, including hurricanes, and is home to numerous animals, including sea turtles and dolphins.
The Atlantic Ocean has played a significant role in trade and travel for many years. The Atlantic Ocean is surrounded by the Americas to the west, Europe to the east, and Antarctica to the south. It stretches from the Arctic Circle to Antarctica. It is the second-largest ocean on Earth after the Pacific Ocean with a surface area of more than 41 million square miles. Geographical experts and scientists generally divide the Atlantic into north and south. Different ocean currents from the North Atlantic and the South Atlantic each affect the weather globally.
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in january, the thermal equator question 34 options: is not influenced by continentality. trends southward into the interior of south america and africa. trends northward over all ocean basins. peaks in the interior of eurasia.
Overall, the thermal equator is an important concept in understanding the Earth's climate and its variations.
In January, the thermal equator is not influenced by continentality and it trends southward into the interior of South America and Africa. The thermal equator refers to the line on the Earth's surface where the average temperature is the highest. This line is not fixed and varies with the seasons. In January, the thermal equator shifts southward towards the tropics and is influenced by the distribution of land and ocean. The land in South America and Africa heats up faster than the ocean, causing the thermal equator to trend southward into the interior of these continents. On the other hand, the thermal equator trends northward over all ocean basins, as the oceans take longer to warm up and cool down compared to land. The thermal equator peaks in the interior of Eurasia due to the large landmass and its location in the northern hemisphere. Overall, the thermal equator is an important concept in understanding the Earth's climate and its variations.
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Which describes how scientists learn more
about Earth's mantle?
F by studying earthquakes
(
by studying rock that has risen due
to convection
H by taking pictures from outside
the Earth
1
by using radioactive dating
Answer:
1
Explanation:
this means a lot to the scientists