2 years ago

HELP! The question is attached below:

Mathematics

1 answer:

Lubov Fominskaja [6]2 years ago

4 0

Answer:

Step-by-step explanation:

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Answer:

(x - 2)² - 30

Step-by-step explanation:

To complete the square

add/subtract ( half the coefficient of the x- term )² to x² - 4x

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3 years ago

Helppppppp. Find k if the lines 3x-5y=9 & 2x+ky=11 are a)parallel and b)perpendicular

V125BC [204]

For lines to be parallel, they have to have the same slopes. For the equation given as Ax + By + C = 0, the slope is -A / B. Equating the slopes of the given equations of lines,
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alexdok [17]

Answer:

$d=\sqrt{73}$

Step-by-step explanation:

$Q(5, -1)$

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<u>Using the distance formula</u>:

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Answer:

$\huge\boxed{\sf \sqrt{-10} i}$

Step-by-step explanation:

$\sf \sqrt{-10} \\\\\sqrt{10} * \sqrt{-1} \\\\We \ know \ that \ \sqrt{-1} = i\\\\= \sqrt{10} i\\\\= \sqrt{2*5 } i \\\\Since \ 2 \ and \ 5 \ are \ not \ perfect \ squares, they \ cannot \ be \ simplified\ further.\\\\= \sqrt{10} i\\\\\rule[225]{225}{2}$

Hope this helped!

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3 years ago

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