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3 years ago

Brainiest!!! please I need help

Mathematics

1 answer:

iVinArrow [24]3 years ago

4 0

Answer:

we i now it its

Step-by-step explanation:

1 distrubutiv propety

2'community of addition

3 addition on unlike term

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3 years ago

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emmainna [20.7K]

Answer:

Step-by-step explanation:

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3 years ago

If f(x) = -6x - 3, find f(x) = 21.

slamgirl [31]

Answer:

$\huge \boxed{x=-4}$

Step-by-step explanation:

$\sf f(x)=-6x-3 \\\\\\ f(x)=21$

Applying substitution method and solving for the value of x.

$\sf 21=-6x-3$

Adding 3 to both sides.

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4 years ago

Read 2 more answers

F(x)=4x squared −7x+7, Find f(2)

Lana71 [14]

Answer: 9

Step-by-step explanation:

4x²-7x+7 f(2)=4*(2)^2-7(2)+7=16-14+7=9

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3 years ago

A company sells widgets. The amount of profit, y, made by the company, is related to

just olya [345]

Answer:

$978

Step-by-step explanation:

Given:

y = amount of profit
x = selling price of each widget
$y=-x^2+78x-543$

To find the maximum amount of profit, differentiate the equation, set it to zero and solve for x. Substitute found value of x into the original equation.

Differentiate equation

$y=-x^2+78x-543$

$\implies \dfrac{dy}{dx}=-2x+78$

Set differentiated equation to zero and solve for x:

$\dfrac{dy}{dx}=0$

$\implies -2x+78=0$

$\implies 2x=78$

$\implies x=39$

Maximum profit

Substitute x = 39 into the equation:

$\implies -(39)^2+78(39)-543=978$

Therefore, max profit is $978

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3 years ago

Brainiest!!! please I need help​

Brainiest!!! please I need help