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Gelneren [198K]
3 years ago
9

Given that x/1 = 3y/8, find the ratio of : y

Mathematics
1 answer:
brilliants [131]3 years ago
5 0

Answer:

3 : 8

Step-by-step explanation:

\frac{x}{1} = \frac{3y}{8}

cross multiply

8x = 3y

x = 3/8

x : y = 3 : 8

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The speed of light is approximately 299,000,000 meters per second.
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Answer:

2.99 x 10⁸ meters per second

Step-by-step explanation:

Scientific notation (also called "Standard form") is written in the form of a \times 10^n, where  1\leq a < 10  and  n is any positive or negative whole number.

To <u>convert</u> a number into <u>scientific notation</u>, move the decimal point to the left or right until there is <u>one digit before the decimal point.</u>

The number of times you have moved the decimal point is the power of 10 (n).

If the decimal point has moved to the <u>left</u>, the power is <u>positive</u>.

If the decimal point has moved to the <u>right</u>, the power is <u>negative</u>.

<u>To convert the given number to scientific notation</u>

The decimal point for the given number 299000000 is after the last zero:

⇒  299000000.

Move the decimal point 8 places to the left:  

⇒ 2.99000000

Get rid of the redundant zeros:

⇒ 2.99

Multiply by 10 to the power of the number of decimal places moved:  

⇒ 2.99 x 10⁸

Therefore, the speed of light using scientific notation is:

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Step-by-step explanation:

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Area of the sector= 3.142*81*0.225

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3 years ago
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