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3 years ago

Write -72=2y^2-16y-20x in standard form

Mathematics

2 answers:

zzz [600]3 years ago

8 0

y = √ 10 ( x − 2 )

y = − √ 10 ( x − 2)+ 4 + 4

kifflom [539]3 years ago

5 0

Answer:

-72=-12y-20x

Step-by-step explanation:

-72=2y^2-16y-20x

square the 2 keeping the variable

-72=4y-16y-20x

Then combine like terms in this case the numbers followed by y's

-72=-12y-20x

This is the standard form as there is nothing else you can combine to break this down any further

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abcd is an isosceles trapezoid with legs ab and cd and base bc if the length of ab =-3y+54 the leingth of bc =5y+2 and the leing

Vilka [71]

ANSWER

$y = 5$

EXPLANATION

The given isosceles tra-pezoid has legs

$ab = - 3y + 54$

and

$cd = 6y + 9$

The base is bc=5y+2.

The length of the legs of the isosceles tra-pezoid are equal.

This implies that,

$ab = cd$

Thus,

$- 3y + 54 = 6y + 9$

Group similar terms,

$54 - 9 = 6y + 3y$

$45 = 9y$

Divide both sides by 9.

$y = \frac{45}{9}$

$y = 5$

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Step-by-step explanation:

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Step-by-step explanation:

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