Any help on this page would help me alot!

Mathematics

2 answers:

amm18123 years ago

4 0

#3

0 -> 2(0)+6 -> 6
1 -> 2(1)+6 -> 8
2 -> 2(2)+6 -> 10

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#4

0 -> 3(0)+1 -> 1
1 -> 3(1)+1 -> 4
2 -> 3(2)+1 -> 7

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#5

2x

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ill continue if someone else hasn’t answered yet-

Olegator [25]3 years ago

3 0

For number 8 : the equation can be y=x+21

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Step-by-step explanation:

2x-3+4x=21

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3 years ago

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alexdok [17]

Answer:

52.9 inches .

Step-by-step explanation:

Given that the triangular indentation has an area of 100 in.² and the base and height of this traingle are represented by expressions 3x and x+3 respectively . We need to find out the perimeter to the nearest tenth.

As we know that the area of triangle is ,

$\rm\longrightarrow Area_{\triangle}=\dfrac{1}{2}(base)(height)$

Substituting the respective values,

$\rm\longrightarrow 100\ =\dfrac{1}{2}(x+3)(3x)\\\\\rm\longrightarrow 2(100) = 3x(x+3)\\\\\rm\longrightarrow200 = 3x^2+9x\\\\\rm\longrightarrow 3x^2+9x-200=0$

On using the Quadratic formula , we have;

$\rm\longrightarrow x =\dfrac{-9\pm\sqrt{9^2-4(3)(-200)}}{2(3)} \\\\\rm\longrightarrow x =\dfrac{-9\pm \sqrt{81+1200}}{6}\\\\\rm\longrightarrow x =\dfrac{-9\pm \sqrt{1281}}{6}$