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vfiekz [6]
3 years ago
12

If 2s +10r = 2(2s-5r) = 42, then what is the value of r?

Mathematics
1 answer:
Lesechka [4]3 years ago
5 0
R=7/5
You can list two equations:
2s+10r=42 and 4s-10r=42.
Then try to delete S, you will get r
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Please help!!
Kamila [148]

The relationship between the trigonometric ratios are cos(X) = cos(A), cos(Y) = cos(C) and cos(Z) = cos(B)

<h3>The relationship between the trigonometric ratios</h3>

The given parameters are:

  • Scale factor of dilation, k = 2
  • cos(X) = 2.5/5/59

Since the transformation is a dilation, it means that both triangles are similar.

So, we have:

cos(X) = cos(A), cos(Y) = cos(C) and cos(Z) = cos(B)

<h3>The segments AC and AB. </h3>

In (a), we have:

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This means that the corresponding points are:

X and A

Y and  C

Z and B

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brainly.com/question/13176891

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4 0
2 years ago
Please completely factor the following expression. e. 3x^2+5xy-2y^2
kramer
3x^2 + 5xy - 2y^2

Simplifying:

3x^2 + 5xy + - 2y^2


Reorder Terms:
5xy +3x^2 + - 2y^2


Factor a Trinomial.
(3x + - 1y)(x + 2y)


Final Result:
(3x + - 1y)(x + 2y)


Hope this helps!!!
6 0
3 years ago
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