How is pillow lava evidence of sea-floor spreading?

1 answer:

8 0

Pillow lava are round concentrations of igneous rock, which are metal-rich sediments. These metal-rich sediments are found in newly formed sea floors, which provides evidence of the floors spreading.

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Select the correct answer. A number is selected at random from the set {2, 3, 4, ... 10}. Which event, by definition, covers the

Shkiper50 [21]

C. The number is even or less than 12

Explanation:

Number 2 can be selected randomly and According to option A the number selected should be greater than 2.

B option is saying that the number is not divisible by 5 but the sample set contains { 2,3,4,5,6,7,8,9,10} . 5 and 10 can be selected and they are divisible by 5.

According to C even number can be selected or the numbers that are lesser than 12. The word "or" should be note here . Any number even or odd may be selected but it will be lesser than 12 so this will be the correct option.

Every element of sample set is either prime or composite so the selected number can either be prime or composite

Square root of 9 is 3 and square root of 10 is greater than 3. Statement will not be correct if number 9 or number 10 got selected the

8 0

3 years ago

Which of the following statements is not true of the Indus and Ganges river systems? A. The majority of people in the Indian Sub

maria [59]

Answer:

Explanation:

Indus river valley and Ganges river valley were two important valleys that helped civilization to flourish. The two cities that flourished on Indus river valley were Harappa and Mohenjo-Daro. The Ganges valley paved the way for the Aryans to flourish.

The statement which is not correct concerning the Indus and Ganges rivers is that these river systems reduced trade. Instead, the people in Indus and Ganges river valley were dependent on trade. The Indus river valley traded with various civilizations such as Persia, Mesopotamia and China. Whereas, the Ganges river systems were vital for river-based trade.

Therefore, option C is correct.

3 0

3 years ago

Read 2 more answers

What type of angle is it? <br>What is the measurement?

romanna [79]

Below I have included an image that has the measure of all of the angles on it.

We can find the measures of the angles here due to the laws about complimentary angles. A pair of complimentary angles can be formed when 2 lines are perpendicular, and when added together, will always equal 90. The pair are the angles that are not directly adjacent from each other. In this figure, "x" and "(4x-10)" are a pair. According to another law, opposite angles, or adjacent angles, will always be equal to each other. Using the logic above is how we can find the measure of all angles.

Since one angle has a box, we know the lines are perpendicular, and that the laws of complimentary angles apply. We can also use that to see that the angle diagonal from it is equal to 90.

To solve for the other measures, we need to add the 2 equations together and set them equal to 90 (because of that law we talked about before).

x+(4x-10)=90
5x-10=90
+10+10
5x=100
/5 /5
x=20

Now that we know x equals 20, we can substitute that value in and solve.

x=20

=(4x-10)
=(4*20-10)
=(80-10)
=70

We also know this is correct because 20 and 70 equal 90.