3 years ago

What is an equation that can be written with 10x+5y=20 to form a pair of linear equations

Mathematics

1 answer:

Lady bird [3.3K]3 years ago

3 0

Y=2x+4 This is the equation

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Whats the answer to g/2-9=-7

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Answer:

Step-by-step explanation:

g/2-9=-7

inverse operation:

g/2-9=-7

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Step-by-step explanation:

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3 years ago

What is the area of a sector with a central angle of 108 degrees and a diameter of 21.2 cm?

Rasek [7]

Answer:

$105.84\ cm^2$

Step-by-step explanation:

step 1

Find the area of the circle

The area of the circle is

$A=\pi r^{2}$

we have

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substitute

$A=\pi (10.6)^{2}$

$A=112.36\pi\ cm^2$

step 2

Find the area of a sector

Remember that

The area of the circle subtends a central angle of 360 degrees

using proportion

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$\frac{112.36\pi}{360^o}=\frac{x}{108^o}\\\\x=112.36\pi(108)/360\\\\x=33.708\pi\ cm^2$

assume

$\pi=3.14$

substitute

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