3 years ago

40 POINTS!!!!

Mathematics

1 answer:

laiz [17]3 years ago

7 0

Answer:

6 sqrt(3) = y

Step-by-step explanation:

We can use the leg rule to find y

hyp leg

----- = -------

leg part

9+3 y

----- = -------

y 9

Using cross products

12*9 = y^2

108 = y^2

Taking the square root of each side

sqrt(108) = sqrt(y^2)

sqrt(36 *3) = y

6 sqrt(3) = y

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Which quadratic equation has solutions x=8 and x=−1?

andrezito [222]

There are two ways you can do this

$Using the formula$

${x}^{2} - (sum \: of \: roots)x + poduct \: of \: roots = 0$

${x}^{2} - (8+-1)x + - 1 \times 8 = 0$

${x}^{2} - 7x - 8 = 0$

$Working backwards$

$x = 8 \: or \: x = - 1$
$\Rightarrow x-8=0 \: or \: x+1=0$

$\Rightarrow (x-8)(x + 1)=0$
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vodka [1.7K]

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Step-by-step explanation:

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Hello,

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3 years ago

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lukranit [14]

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Kobotan [32]

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Step-by-step explanation:

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