2 years ago

I’m really struggling here :,D

Mathematics

1 answer:

Mnenie [13.5K]2 years ago

6 0

Answer:

-2

Step-by-step explanation:

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Look at pic for question and answer choices.

Doss [256]

The answer would b the 3rd option

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2 years ago

If x=-4 and y=3 what is the value of x-3y^2 a: -13 b: -31 c: -23 d: -85

Alexandra [31]

Answer:

b -31

Step-by-step explanation:

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2 years ago

Read 2 more answers

Whats the answer for (5x + 8)(4x² + 6x - 8)

mestny [16]

$(5x + 8)(4x^2 + 6x - 8)\\ \\ 5x(4x^2 + 6x - 8) + 8(4x^2 + 6x - 8) \\ \\ 20x^3 + 30x^2 - 40x + 8(4x^2 + 6x - 8) \\ \\ 20x^3 + 30x^2 - 40x + 32x^2 + 48x - 64 \\ \\ 20x^3 + (30x^2 + 32x^2) + (-40x + 48x) - 64 \\ \\ 20x^3 + 62x^2 + 8x - 64 \\ \\$

The final result is: 20x^3 + 62x^2 + 8x - 64.

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3 years ago

Y is a differentiable function of x. Choose the alternative that is the derivative dy / dx.

murzikaleks [220]

Differentiating both sides of

$x^3-y^3=1$

with respect to x yields (using the chain rule)

$3x^2 - 3y^2 \dfrac{\mathrm dy}{\mathrm dx} = 0$

Solve for dy/dx :

$3x^2 - 3y^2 \dfrac{\mathrm dy}{\mathrm dx} = 0 \\\\ 3y^2\dfrac{\mathrm dy}{\mathrm dx} = 3x^2 \\\\ \dfrac{\mathrm dy}{\mathrm dx} = \dfrac{3x^2}{3y^2} = \dfrac{x^2}{y^2}$

The answer is then D.

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2 years ago

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Elodia [21]

Answer:

4 ways (WW-BB-WB-BW)

Step-by-step explanation:

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2 years ago