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Musya8 [376]
3 years ago
5

Find the value of 3x + 2 when 7 + x = 5

Mathematics
1 answer:
Stells [14]3 years ago
6 0
Work out the second equation first.
7 + x= 5
-7      -7
   x = -2
Plug in x.
3(-2)+2=?
  -6+2=4
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Ind the slope and y intercept of -9x+3y=5
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If the sides of two similar triangles are in the ratio of 3:5, find the ratio of their areas.
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Ratio of areas of similar triangles is 9 : 25.

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Given data:

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To find the ratio of areas of the triangles:

We know that,

<em>In two triangles are similar, then the ratio of their area is equal to the square of the ratio of their sides.</em>

$\text{Ratio of areas} = \frac{\text{Area of triangle 1}}{\text{Area of triangle 2} }

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