3 years ago

I have a final for summer schoollll due midnight and it’s 10:23!!!!!!!!!!!!

Mathematics

1 answer:

shtirl [24]3 years ago

6 0

26 good luck n I hope you pass

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nirvana33 [79]

Answer:

-56/9

Step-by-step explanation:

By Vieta's formulas,

$r + s = -\frac{4}{3}$ and $rs = \frac{12}{3} = 4.$ Squaring the equation $r + s = -\frac{4}{3},$ we get

$r^2 + 2rs + s^2 = \frac{16}{9}.$ Therefore,

$r^2 + s^2 = \frac{16}{9} - 2rs = \frac{16}{9} - 2 \cdot 4 = -\frac{56}{9}}$

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Step-by-step explanation:

Area of a square

Area = l*l

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took test & got it right

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joey can paint a room in 2 hours and chelsea can paint the same room in 3 hours. if they work together how long would it take to

JulijaS [17]

Answer:

$1.2\ hours$

Step-by-step explanation:

we know that

Joey can paint a room in 2 hours

That means

Joey can paint the 100% of the room-------> 2 hours

In 1 hour ------> can paint 100%/2=50%

Chelsea can paint a room in 3 hours

That means

Chelsea can paint the 100% of the room-------> 3 hours

In 1 hour ------> can paint (100%/3)=33.33%

therefore

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by proportion

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