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Dima020 [189]
3 years ago
10

In 2008, there were 6.7 * 10^9 people living on earth. What is that number in standardnotation?​

Mathematics
1 answer:
snow_lady [41]3 years ago
8 0

Answer:

6,700,000,000

Step-by-step explanation:

Standard Notation is the normal way of writing numbers.

Scientific notation of 6.7 * 10^9  would mean we need to move the decimal point "9" units "to the right" and arrive at our normal standard form of the number.

So, we move 1 decimal place and create 67. Then with the next 8 moves (to the right), we add 8 more zeros, so the number actually becomes:

6,700,000,000

This is 6 billion, 700 million.

This is the normal standard way (standard notation) of writing numbers.

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Answer: The answer is 3^12.

Step-by-step explanation:

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Find the measure of XCY. PLEASE HELP ME AND SHOW WORK
Dovator [93]

Answer:

Measure of angle XCY is 60°.

Step-by-step explanation:

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Using this property in the given circle,

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By substituting the value of 'x' in the measure of ∠XCY,

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2 years ago
Write the polynomial in factored form as a product of linear factors f(r)=r^3-9r^2+17r-9
adelina 88 [10]

Answer:

  f(r) = (x -1)(x -4+√7)(x -4-√7)

Step-by-step explanation:

The signs of the terms are + - + -. There are 3 changes in sign, so Descartes' rule of signs tells you there are 3 or 1 positive real roots.

The rational roots, if any, will be factors of 9, the constant term. The sum of coefficients is 1 -9 +17 -9 = 0, so you know that r=1 is one solution to f(r) = 0. That means (r -1) is a factor of the function.

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Now, we know the zeros are {1, 4+√7, 4-√7), so we can write the linear factorization as ...

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_____

<em>Comment on the graph</em>

I like to find the roots of higher-degree polynomials using a graphing calculator. The red curve is the cubic. Its only rational root is r=1. By dividing the function by the known factor, we have a quadratic. The graphing calculator shows its vertex, so we know immediately what the vertex form of the quadratic factor is. The linear factors are easily found from that, as we show above. (This is the "other means" we used to find the quadratic roots.)

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Answer:

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According to the above problem,

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<h3><u>y=26</u><u>°</u> is the right answer.</h3>
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shtirl [24]

Answer:5

Step-by-step explanation:

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