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77julia77 [94]
3 years ago
14

The sum of 8n^2-3n+10 and -3n^2 -6n-7 is

Mathematics
2 answers:
pogonyaev3 years ago
7 0
5n^2-9n-7



that’s the answers
Nimfa-mama [501]3 years ago
4 0

seems liek it is 5n^2 - 9n + 3

sorry if I need to simplify so if so:

21


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A parallelogram in which adjacent sides are perpendicular to each other is called a rectangle. The value of x or the length of TU is 22.5.

<h3>What is a rectangle?</h3>

That parallelogram in which adjacent sides are perpendicular to each other is called a rectangle. A rectangle is always a parallelogram and a quadrilateral but the reverse statement may or may not be true.

Since all the rectangles are similar, therefore, the corresponding sides of the rectangle will be in ratio. Therefore,

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\dfrac{\text{Width of STUV}}{\text{Width of MNOP}} = \dfrac{\text{Length of STUV}}{\text{Length of MNOP}}\\\\\\\dfrac{\text{Width of STUV}}{\text{Width of MNOP}} = \dfrac{9}{6}\\\\\\\dfrac{x}{15}=\dfrac96\\\\\\x = \dfrac{9 \times 15}{6} = 22.5

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