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Andrew [12]
3 years ago
10

Find the particular solution of dy/dx=x^2-y

Mathematics
1 answer:
lora16 [44]3 years ago
8 0
Differentiate each term with respect to x , then solve y'.

dy/dx = y+2x^3/ x(1+x)
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The sum of three numbers $x$ ,$y$, $z$ is 165. When the smallest number $x$ is multiplied by 7, the result is $n$. The value $n$
babymother [125]

You're given

<em>x</em> + <em>y</em> + <em>z</em> = 165

7<em>x</em> = <em>n</em>

<em>n</em> = <em>y</em> - 9

<em>n</em> = 9 + <em>z</em>

and you want to find <em>xyz</em>.

Solve the last three equations for <em>x</em>, <em>y</em>, and <em>z</em> :

7<em>x</em> = <em>n</em>   →   <em>x</em> = <em>n</em>/7

<em>n</em> = <em>y</em> - 9   →   <em>y</em> = <em>n</em> + 9

<em>n</em> = 9 + <em>z</em>   →   <em>z</em> = <em>n</em> - 9

Substitute <em>x</em>, <em>y</em>, and <em>z</em> into the first equation and solve for <em>n</em> :

<em>n</em>/7 + (<em>n</em> + 9) + (<em>n</em> - 9) = 165

<em>n</em>/7 + 2<em>n</em> = 165

<em>n</em> + 14<em>n</em> = 1155

15<em>n</em> = 1155

<em>n</em> = 77

Now solve for <em>x</em>, <em>y</em>, and <em>z</em> :

<em>x</em> = 77/7 = 11

<em>y</em> = 77 + 9 = 86

<em>z</em> = 77 - 9 = 68

Then the product is

<em>xyz</em> = 11 • 86 • 68 = 64,328

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2 years ago
Which point lies below the x-axis and to the right of the
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The answer is (4,-6)
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2 years ago
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A rectangle field is five times as long as it is wide. If the perimeter of the field is 288 yards, what are the field's dimensio
mr_godi [17]

x + x + 5x + 5x = 288 \\ 12x = 288 \\ x = 24

Width = 24 yards
Length = 24 x 5 = 120 yards

Area =
24 \times 120 = 2880 \: sq. \: yrds

Hope this helps. - M
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3 years ago
The secret number is grater than 75.<br>it has 9 tens.<br>it has a 3 in the ones places.​
Vikki [24]

Answer:

The secret number is 93.

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allison can paint the office in 7 hours. Working with an assistant, she can paint the office in 3 hours. How long would it take
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