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Natalija [7]
2 years ago
15

Please I need help does anyone know a hack for khan academy

Mathematics
1 answer:
Evgesh-ka [11]2 years ago
7 0

Answer:

Answer:

0.3643

Step-by-step explanation:

Standard Form and Scientific Notation

What is standard form of numbers?

Standard form is the normal way of writing numbers no matter how big or small the number is.

Examples:

15,000,000

0.0000000678

What is scientific notation?

Scientific notation is a different way of expressing numbers. It is a short way of expressing very big numbers or very small numbers. It is also known as exponential form. Scientific notation is written as the product of a number and a power of 10.

Examples:

1.3 × 10⁶

34.5 × 10^⁻9

Going back to the question above, we need to convert the given scientific notation to its standard form.

Converting of Scientific Notation to Standard Form

To convert a number from scientific notation to standard form, move the decimal point.

The exponent tells the direction and the number of times we need to move the decimal point.

The positive exponent indicates a large number so we need to move the decimal point to the right.

The negative exponent indicates a small number so we need to move the decimal point to the left.

Do not write the power of 10 anymore.

Solution:

Now, let us convert 3.643 x 10^-1 in standard form.

The exponent is negative 1 so we will move the decimal point to the left once.

3.643 = 0.3643

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Answer:

12

Step-by-step explanation:

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Factors of 42: 1,2,3,(6),7,14,21,42

30 divided by 6, 42 divided by 6

(5) + (7)= 12

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2 years ago
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Answer:

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3 years ago
the area of a square whose sides have length x cm is increasing at the rate of 12cm²/s. how fast is the length of a side increas
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Step-by-step explanation:

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Where

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Differentiating equation (1) wrt t.

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When A = 81cm²​, the side of the square, x = 9 cm

Put all the values,

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So, the length of the side of a square is changing at the rate of 0.67 cm/s.

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2 years ago
Hannah's mom gave her a bag of chips she gives 6 chips to each other 10 friends she has 12 pieces left for herself how many kids
shutvik [7]

Answer:

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As part of a new fitness plan, Sabir walks on a treadmill at the same speed for 15 minuets every morning. The table shows the ca
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The relationship between Sabir and calories he burns can be modeled using a linear function given by:
y=ax+b
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b=y-intercept
from the graph, the slope will be given as follows:
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3 years ago
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