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algol13
3 years ago
7

I don’t know how many times i’ve been going through this question but i need some serious help

Mathematics
1 answer:
Troyanec [42]3 years ago
8 0
\cfrac{x^2-81}{x^2\underline{-6x}-27} \cdot \cfrac{x+3}{x}= \cfrac{(x-9)(x+9)}{x^2\underline{+3x-9x}-27} \cdot \cfrac{x+3}{x}= \\ \\ \\ \\=\cfrac{(x-9)(x+9)}{x(x+3)-9(x+3)} \cdot \cfrac{x+3}{x}=\cfrac{(x-9)(x+9)}{(x+3)(x-9)} \cdot \cfrac{x+3}{x}= \boxed{\frac{x+9}{x} }
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How many solutions does the system have? <br> {2x+2y=8 <br> {3x+y=8 2x+2y=8 ​
umka2103 [35]

Answer:

Step-by-step explanation:

first we put them in y = mx + b form...then we compare the slopes and the y int's. In y = mx + b form, the slope is in the m position and the y int is in the b position.

2x + 2y = 8

2y = -2x + 8

y = -x + 4......slope here is -1 and y int is 4

3x + y = 8

y = -3x + 8.....slope here is -3 and y int is 8

This system has 1 solution <===

================================

learn this...it helps

* if there are different slopes and different y int, then there is 1 solution

* if there are the same slopes and different y int, then there is no solutions because u have parallel lines

* if there are same slopes and same y int, there is infinite solutions because u have the same line

4 0
4 years ago
Read 2 more answers
Which graph represents a proportional relationship?
Anestetic [448]
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8 0
3 years ago
A customer buys four products priced at $18, $22, $35 and $40 from the same store. The customer returns the most expensive produ
blondinia [14]
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5 0
3 years ago
What’s the range?????? :(
LenKa [72]

Answer:

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Step-by-step explanation:

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6 0
3 years ago
A cylinder has a height of 17 millimeters and a radius of 6 millimeters. What is its volume? Use ​ ≈ 3.14 and round your answer
lozanna [386]

Answer:

1921.68mm^3

Step-by-step explanation:

Given data

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substitute

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V= 3.14*36*17

V= 1921.68 mm^3

Hence the volume is 1921.68mm^3

8 0
3 years ago
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