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ANTONII [103]
3 years ago
15

Pls help me with this

Mathematics
2 answers:
labwork [276]3 years ago
7 0

Answer:

  5/4

Step-by-step explanation:

The constant of proportionality is the coefficient of x: 5/4.

ser-zykov [4K]3 years ago
4 0

Answer:

x:5/4

Step-by-step explanation:

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If 3x - 2y = 9 , 27x³- 8y³= 1377 , prove that xy = 4 <br><br><br><br>plzz answer this question... ​
solniwko [45]

Step-by-step explanation:

Here we are given that , the Value of

  • 3x - 2y = 9
  • 27x^3 - 8y^3 = 1377

And we need to find the prove that ,

  • xy = 4

We know a identity as ,

  • (a-b)^3 = a^3-b^3-3ab(a-b)

On cubing both sides of the given equation,

  • (3x-2y)^3 = 9^3

Simplify and then substitute ,

  • 27x^3-8y^3 -3(3x)(2y)(3x-2y ) = 729

  • 1377 - 18xy (9) = 729

  • 162xy = 1377-729

  • xy =\dfrac{648}{162}

  • xy = 4

Hence Proved !

8 0
3 years ago
1. Jay said, “The amount of money in my checking account is less than $50.00, but greater than $40.00.” Which statements about t
Sav [38]
I am pretty sure a is the awnser <span />
5 0
3 years ago
Plz help I need help
Simora [160]

Answer:

a. 1/4

Step-by-step explanation:

no need for explanation

its basic

6 0
2 years ago
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a/2 would be the only possible answer

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3 years ago
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