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galben [10]
3 years ago
11

Solutions to x^2 -2 = x

Mathematics
1 answer:
Andrei [34K]3 years ago
4 0
X^2-2=x
x^2-2+x=0
x^2+x-2=0
(x+2)(x-1)=0
Therefore, x+2=0 or x-1=0
Hence, x=-2 or x=1
Solutions= -2 or 1
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ANSWER

The correct answer is C

EXPLANATION

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This implies that, x=8 units.

Using Pythagoras Theorem,

{y}^{2}  =  {8}^{2}  +  {8}^{2}

This implies that:

{y}^{2}  = 64  +  64

{y}^{2}  =128

Take positive square root,

{y}  =  \sqrt{128}

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The correct answer is C

5 0
3 years ago
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Considering the volume of the cone, it is found that each triathlete sloshed out 9.5 cm³ of water.

<h3>What is the volume of a cone?</h3>


The volume of a cone of <u>radius r and height h</u> is given by:

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In this problem, the radius and the height are given as follows:

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Hence the total volume is:

V = 1/3 x 3.5² x 7 = 28.6 cm³

The triathletes sloshed out 1/3 of that, hence:

1/3 x 28.6 = 9.5 cm³.

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3 0
2 years ago
What is the area of the triangle
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hope this helps

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Step-by-step explanation:

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3 years ago
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3 years ago
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First integer = x

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Third integer = x + 4

Since four times the first integer equals six more than the product of two and the third integer.

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Hence,

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hope this helps

8 0
3 years ago
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