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salantis [7]
2 years ago
6

WILL CHOOSE BRAINLIEST. Choose the best estimate of the width of a human hair.

Mathematics
2 answers:
sveta [45]2 years ago
8 0
The best answer is B
erma4kov [3.2K]2 years ago
6 0

Answer:

Id say its C!

Because in mm, a human hair on average is 70 mm's thick

Have a wonderfull day :D

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yulyashka [42]

Answer:

Option B.

Step-by-step explanation:

If a quadratic equation is defined as

ax^2+bx+c=0         .... (1)

then the quadratic formula is

x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}

The given equation is

10x^2=6+9x

It can rewritten as

10x^2-9x-6=0            .... (2)

On comparing (1) and (2) we get

a=10,b=-9,c=-6

Using quadratic formula we get

x=\dfrac{-(-9)\pm \sqrt{(-9)^2-4(10)(-6)}}{2(10)}

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ExtremeBDS [4]

Answer:

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Step-by-step explanation:

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