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11Alexandr11 [23.1K]
2 years ago
12

Write in scientific notation. 0.5(8 X 10^5)

Mathematics
2 answers:
OLEGan [10]2 years ago
5 0
8x10^5 = 800,000

times 800,000 by 0.5 (or just half it) would equal 400,000, which is translated to 4x10^5
Mandarinka [93]2 years ago
4 0
The answer is:  " 4 * 10⁵ " .
___________________________________
Explanation: 
___________________________________

    →  0.5 * (8 * 10⁵) = 0.5 * 8 * 10⁵ ;
___________________________________
    →  0.5 * 8 = (1/2) * 8 =  4 ;   
________________________________________

→  We now have:  4 * 10⁵ ; which  is the most simplified value; that is, written in proper "scientific notation."
_________________________________________
The answer is:  " 4 * 10<span>⁵ " .
_________________________________________</span>
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Answer:

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k  =  ??   we know that when   T  =  25°    W = 100 tons  the by subtitution

W = k/T           100  =  k /25       k  =  2500 Tons*degree

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W = 2500 / T

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W = 2500 / 5

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iii)

The inverse proportionality implies that W will decrease as T increase.

The vector gradient of W function is:

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And when T = 100°

grad W(10°) =  - 2500/ 100 î      ⇒  grad W(10°) = - 25î

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