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4 years ago

Y= − 2 ( x − 2 ) ( x + 8 ) −2(x−2)(x+8) in standard form

Mathematics

1 answer:

Harlamova29_29 [7]4 years ago

7 0

Answer:

$y=-4x^{2} -24x+64$

Step-by-step explanation:

$y=-2(x-2)(x+8)-2(x-2)(x+8)$

$y=-2x^{2} +12x+32-2(x-2)(x+8)$

$y=-2x^{2} -12x+32-2x^{2} -12x+32$

$y=-4x^{2} -24x+64$

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Arlecino [84]

Answer:

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Step-by-step explanation:

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3 years ago

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qwelly [4]

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Step-by-step explanation:

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3 years ago

Which expression correctly represents eight times the difference of 4 and a number

expeople1 [14]

Answer:

The expression for two times the difference of 4 and a number is

$8(4-d)$

Step-by-step explanation:

To Find:

Write an expression for Eight times the difference of 4 and a number.

Solution:

Let the Unknown number be 'd'

Difference of 4 and d = ( 4 - d )

So One Time Difference of 4 and d = 1× ( 4 - d )

∴ Two Times Difference of 4 and d = 2× ( 4 - d )

∴ Eight Times Difference of 4 and d = 8× ( 4 - d )

The expression for Eight times the difference of 4 and d. will be

$8(4-d)$

The expression for Eight times the difference of 4 and a number is

$8(4-d)$

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4 years ago

A train goes from New Orleans to Boston at 40 mph. On the way back it returns with a speed of 80 mph. If it takes it an hour les

Serggg [28]

Let's say the distance is "x".

time = distance / rate

time1 = x / 40

time2 = x/80

A) time1 shoud be twice time2 or (time1 / time2) =2

B) time1 -1 = time2

Substituting equation B) into A)

((time1 / (time1 -1) = 2

time1 = 2* time1 -2

time1 = 2 hours time2 = 1 hour

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3 years ago

Please help

KonstantinChe [14]

Answer:

Step-by-step explanation:

Graph the parabola using the direction, vertex, focus, and axis of symmetry.

Vertex: (2,1)(2,1)

Focus: (2,54)(2,54)

Axis of Symmetry: x=2

Hope it helped :)

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3 years ago