3 years ago

96,470,000 scientific notation.

Mathematics

1 answer:

slamgirl [31]3 years ago

5 0

Answer:

9.647•10^7

Step-by-step explanation:

Take 96,470,000 and move the imaginary decimal before the first 0 and move it between the 9 and the 6 to get 9.647. However many numbers after the decimal is what you put above the 10 to get 10^7.

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The length (L) of a rectangle of fixed area varies inversely as the width (W).

Andreyy89

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The area of a rectangular wall of a barn is 252 square feet. Its length is 10 feet longer than twice its width. Find the length

valentinak56 [21]

Answer: Length = 28 feet and width = 9 feet

Step-by-step explanation:

Let x = width of the wall.

Then, Length of the wall = 10+2x

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Then, as per given,

$252= (10+2x)x\\\\\Rightarrow\ 252=10x+2x^2\\\\\Rightarrow\ 2x^2+10x-252=0\\\\\Rightarrow\ x^2+5x-126=0\\\\\Rightarrow\ x^2+14x-9x-126=0\\\\\Rightarrow\ (x+14)-9(x+14)=0\\\\\Rightarrow\ (x+14)(x-9)=0\\\\\Rightarrow\ x=-14 \ or \ x= 9$

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4 years ago