2 years ago

Help: Scientists think the _____ is a solid iron with a layer of liquid iron surrounding it.

1 answer:

3 0

<span>The inner core is made of solid iron, and it is surrounded by the liquid iron of the outer core. It is solid because the extreme pressure at the center of the earth prevents it from melting, despite the unimaginable temperatures.</span>

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Answer:

To answer this item, we add up all the scores and divide the sum by the total number of quizzes.

0: 0 quizzes

1 : 1 quiz total : 1

2: 3 quizzes total : 6

3: 4 quizzes total : 12

4: 4 quizzes total : 16

5: 1 quiz total : 1

There are 13 quizzes and the total score is 36. Dividing the total score by the total number of quizzes will give us a final answer of 2.77.

Step-by-step explanation:

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2 years ago

Find the product (a^2-b)(5a^2+6b)

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Answer:

5a^4+a^2b−6b^2

Step-by-step explanation:

1. Use the FOIL method: (a+b)(c+d)=ac+ad+bc+bd.

5a^4+6a^2b−5ba^2−6b^2

2. Collect like terms.

5a^4+(6a^2b−5a^2b)−6b^2

3. Simplify.

5a^4+a^2b−6b^2

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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