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attashe74 [19]
3 years ago
5

Find the value of x, rounded to the nearest tenth.​

Mathematics
2 answers:
polet [3.4K]3 years ago
4 0
The answer The answer is 18
Step2247 [10]3 years ago
3 0

Answer:

x = 18

Step-by-step explanation:

Given two intersecting chords inside a circle, then the product of the parts of one chord is equal to the product of the parts of the other chord, that is

7x = 21 × 6 = 126 ( divide both sides by 7 )

x = 18

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If A(2, x) , B(x, 8) and AB = 3√2 cm, then x = ?
Nuetrik [128]

Answer:

x =5

Step-by-step explanation:

Using the formula for calculating the distance between two points

D = √(x2-x1)²+(y2-y1)²

Given the points A(2, x) , B(x, 8) and AB = 3√2

On substituting the given values into the formula;

AB = √(x-2)²+(8-x)²

3√2= √(x-2)²+(8-x)²

square both sides

(3√2)²= (x-2)²+(8-x)²

18 = (x-2)²+(8-x)²

expand

18 = x²-4x+4+64-16x+x²

18 = 2x²-20x+68

2x²-20x+68-18 = 0

2x²-20x+50 = 0

x²-10x+25 = 0

Factorize

x²-5x-5x+16 = 0

x(x-5)-5(x-5) = 0

(x-5)(x-5) = 0

x-5 = 0 an x-5 = 0

x = 5

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3 years ago
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Answer+Step-by-step explanation:

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How is the graph of y= 1/3x related to its parent function y=1/x
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