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2 years ago

12

Examine the words and/or phrases below and determine the relationship among the majority of words/phrases. Choose the option tha

t does not fit the pattern. a. fossil evidence.b. ancient climates.c. paleomagnetism.d. fit of the continents.

1 answer:

Mrac [35]2 years ago

6 0

Answer:

c) paleomagnetism because it is important the source of Earth's evolution.

Explanation:

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When Carla solved for the height from the ground to the point where the ladder

Westkost [7]

Answer:

<em>See explanation</em>

Explanation:

Given

Represent the vertical angle with $\theta$

$\theta = 75$

The question has incomplete details because the length of the ladder is not given; neither is the distance between the ladder and the wall given.

<em>See attachment for illustration</em>

So, this solution will be based on assumptions.

Represent

- The height from ground to the top of the ladder with y

- The length of the ladder with L

- The distance between the ladder and the wall with x

Carla could solve for y in any of the following ways:

1. Tan formula

$tan \theta = \frac{opp}{adj}$

In this case:

$tan \theta = \frac{x}{y}$

Multiply both sides by y

$y * tan \theta = \frac{x}{y} * y$

$y * tan \theta = x$

Divide both sides by tan

$y = \frac{x}{tan \theta}$

$y = \frac{x}{tan 75}$

This can be used if the distance (x) between the ladder and the wall is known.

Assume x = 15

$y = \frac{15}{tan 75}$

$y = 4.02$

2. Cosine formula

$cos \theta = \frac{adj}{hyp}$

In this case:

$cos \theta = \frac{y}{L}$

Multiply both sides by L

$L * cos \theta = \frac{y}{L} * L$

$Lcos \theta = y$

$y = Lcos \theta$

$y = Lcos75$

This can be used if the length (L) of the ladder is known.

Assume L = 15

$y = 15 * cos75$

$y = 3.88$

3 0

2 years ago

11. Mercury is the only metal that occurs at the Earth's surface in liquid form. In fact, it has a density of 30 lbs/L. What is

sveta [45]

Answer:

D) 13.62 kg/L

Explanation:

This problem can be solved by a simple rule of three.

The problem states that Mercury has a dansy of 30 lbs/L, and asks what is the density in kg/L. We have to convert from lbs to kg.

Each lb has 0.454 kg? How many kg are there in 30 lbs?

So:

1 lb - 0.454kg

30 lb - x kg

$x = 30(0.454)$

$x = 13.62$

This means that mercury's density in kg/L is 13.62, letter D. Letter A is also 13.62, however it is not in the unit asked.

7 0

3 years ago

Central America is a(n) that connects the continents of North and South America.

Nikolay [14]

Central America is a long and narrow strip of land which is located between two bodies of water and which connects two pieces of land - we call such a formation an "isthmus" - this is the correct answer.

The Suez canal is also such an isthmus and so is Manila, the capital of the Philippines.

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3 years ago

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The path of one object rotating around another

Hitman42 [59]

Answer:

orbit

Explanation:

bcuz i said

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3 years ago

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Market economies produce goods that __________.

GrogVix [38]

Answer:

Consumers demand

Explanation:

To get most sales, Market Economies mainly care about what the Consumers want and need, this guarantees good sales

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3 years ago

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