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3 years ago

Write 0.0000000001 in scientific notation

Mathematics

2 answers:

tiny-mole [99]3 years ago

8 0

The answer is 1*10^-10.

padilas [110]3 years ago

4 0

The answer is 1* 10^-8

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Dmitry_Shevchenko [17]

Answer:

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Step-by-step explanation:

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2 years ago

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Please Help? A circle has an arc length of 5π in. The central angle for this arc measures π/3 radians. What is the area of the a

Zielflug [23.3K]

Answer:

The area of the associated sector is $\frac{25}{24}\pi \ in^{2}$

Step-by-step explanation:

step 1

Find the radius of the circle

we know that

The circumference of a circle is equal to

$C=2\pi r$

we have

$C=5\pi\ in$

substitute and solve for r

$5\pi=2\pi r$

$r=2.5\ in$

step 2

Find the area of the circle

we know that

The area of the circle is equal to

$A=\pi r^{2}$

we have

$r=2.5\ in$

substitute

$A=\pi (2.5^{2})=6.25\pi\ in^{2}$

step 3

Find the area of the associated sector

we know that

$2\pi\ radians$ subtends the complete circle of area $6.25\pi\ in^{2}$

by proportion

Find the area of a sector with a central angle of $\pi/3\ radians$

$\frac{6.25\pi }{2\pi} =\frac{x}{\pi/3}\\x=6.25*(\pi/3)/2\\ \\x=\frac{25}{24}\pi \ in^{2}$

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3 years ago

How do I graph -2=-2x+y

igor_vitrenko [27]

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KIM [24]

4(x -2) +(y +5) = 0 . . . . . an equation

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___
A graph can be seen at
https://www.desmos.com/calculator/3ct9gfxclj

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3 years ago