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Fittoniya [83]
2 years ago
10

Y is inversely proportional to x. If y= 400 when x =2 find y when x= 200

Mathematics
1 answer:
o-na [289]2 years ago
4 0

Answer:  4

<u>Step-by-step explanation:</u>

Inversely proportional means xy = k, where k is the constant of proportionality

First, find k when x = 2 and y = 400 ----> 2(400) = k   --> 800 = k

Then, find y when x = 200 (knowing that k = 800)

                                    200y = 800

                                           y = 4

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Alegbra 4 questions giving brainlist!
olga nikolaevna [1]

Answer:

1) 4

2) 1

3) -7

4) 13

Step-by-step explanation:

Instructions:

a) Subtract or add the slope from each side

( it doesn't matter which one you pick )

b) Subtract or add the # next to the slope from each side

( it doesn't matter which one you pick )

c) Divide Each number by the slope

d You have you answer

____________________________________________

1) 9x - 35 = - 7x + 29

+7x + 7x

_____________________

16x - 35 = 29

+ 35 +35

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16x = 64

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16 16

x = 4

2). - 2x - 2 = 9x - 13

+2x +2x

_____________________

- 2 = 11x - 13

+ 13 + 13

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11 = 11x

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11 11

1 = x

3). 3x + 29 = - 5x - 27

+5x + 5x

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8x + 29 = - 27

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8x = -56

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8 8

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4). x - 11 = 3x - 37

- x - x

______________________

-11 = 2x - 37

+37 +37

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26 = 2x

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2 2

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Hope this helps! (:

3 0
3 years ago
63 divisible by five
Sergeeva-Olga [200]

63 / 5 = 12.6 or 12 remainder 3

4 0
3 years ago
There are 180 pages in the book Diana is reading. Diana has read 90 pages. What percent of the book has she read?
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The answer is fifty percent
4 0
3 years ago
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astra-53 [7]
This is all a bit complicated so try and stick with me on this one!

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The second problem in the first picture! 3x / y + 3x - y^2 / 3xy - 9x^2 + y^2 + 9x^2 / y^2 - 9x^2

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I hope this was helpful!!!

Please remember to rate/thank/mark as brainliest if you see fit! (:



3 0
3 years ago
The telephone company purchased 95 yards of wire for $1,235 in September. They plan on making a purchase of 285 yards in October
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It will cost them $3705 because 285/95= 3 and so 3*1235 is $3705
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2 years ago
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