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Kamila [148]
3 years ago
5

If x-y=9,x²+y²=27,then x-y=?​

Mathematics
2 answers:
lord [1]3 years ago
8 0

Answer:

x-y is equal to nine and you are asking x-y so the ans is9

iVinArrow [24]3 years ago
7 0

Answer:

x-y=9

x²+y²=27

then x-y=9

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The radius of a sphere is multiplied by 7. What effect does this have on the volume of the sphere?
elena55 [62]

Answer:

The new volume is 7^3 or 343 times the old volume

Step-by-step explanation:

The original sphere has a volume of

V = 4/3 pi r^3

The radius is multiplied by 7

The new volume is

V = 4/3 pi (7r) ^3

V = 4/3 pi (7)^3 r^3

The new volume is 7^3 or 343 times the old volume

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MariettaO [177]
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un tren salió de la estación a las 9:45:27. Si dos horas y media más tarde ha llegado a su destino, ¿a qué hora llegó?
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3 years ago
Read 2 more answers
Determine the equivalent system for the given system of equations.<br> 4x - 5y = 2<br> 3x - y = 8
Black_prince [1.1K]

Solving the system of equations we get solution set (38/11,26/11)

Step-by-step explanation:

We need to solve the system of equations:

4x - 5y = 2\\3x - y = 8

Let:

4x - 5y = 2\,\,\,eq(1)\\3x - y = 8\,\,\,eq(2)

Multiply equation 2 with 5 and subtract both equations to find value of x:

4x - 5y = 2\\15x - 5y = 40\\-\,\,\,\,+\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,-\\--------\\-11x=-38\\x=\frac{-38}{-11}\\x=\frac{38}{11}

So, value of x = 38/11

Now, finding y:

Putting value of x in equation 2

3x-y=8\\3(\frac{38}{11})-y=8\\\frac{114}{11}-y=8\\-y=8-\frac{114}{11}\\-y=\frac{8*11-114}{11}\\-y=\frac{88-114}{11}\\-y=\frac{-26}{11}\\y=\frac{26}{11}

So, value of y = 26/11

So, Solving the system of equations we get solution set (38/11,26/11)

Keywords: System of equations

Learn more about system of equations at:

  • brainly.com/question/9045597
  • brainly.com/question/3739260
  • brainly.com/question/13168205

#learnwithBrainly

6 0
3 years ago
Graph 4x-2y is greater than or equal to 4<br> what are the two points on the boundary line?
lyudmila [28]
The boundary line is the line
4x-2y=4
if y=0, x=1
if x=0, y=-2

(x,y)
2 points are
(1,0) and (0,-2)
3 0
4 years ago
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