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emmainna [20.7K]
4 years ago
12

D/dx (28000-50x²-400x)

Mathematics
1 answer:
drek231 [11]4 years ago
8 0

Answer:

  -100x - 400

Step-by-step explanation:

The derivative of a sum is the sum of the derivatives by the sum rule, and this also extends to differences by the constant multiple rule

  \dfrac{d}{dx}(28000 - 50x^2 - 400x) = \dfrac{d}{dx}(28000) - \dfrac{d}{dx}(50x^2) - \dfrac{d}{dx}(400x)

By the constant multiple rule, we have

  = \dfrac{d}{dx}(28000) - 50\dfrac{d}{dx}(x^2) - 400\dfrac{d}{dx}(x)

The derivative of any constant is 0.

The power rule says that for any real number n, \frac{d}{dx} x^n = nx^{n-1}. And note that x = x^1. Thus we have

  = 0 - 50(2)x - 400(1)x^0 = -100x - 400

since x^0 = 1

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Factorise x square - 3 x minus 2​
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Answer:

The answer is below

Step-by-step explanation:

The equation x² - 3x - 2 cannot be factorized, I think the correct question is:

factorize x² - 3x + 2​

Solution:

A quadratic equation is a polynomial equation of the second degree (that is there is at least one term with a degree of 2).

The standard form of a quadratic equation is given by the equation:

ax² + bx + c = 0

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Given:

x² - 3x + 2

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3 years ago
Subtract -7a^2 + 3a -9 from 5a^2 - 6a -4<br><br> Answer should be polynomial in standard form
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answer
12a^2 - 9a + 5
6 0
3 years ago
2x + 3y = 15 and x - 3y = 3 What's the ordered pair
Ganezh [65]

Answer:

x = 6

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Step-by-step explanation:

to solve this system of equation we say let

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from equation 2

x - 3y = 3.................................. equation 2

x = 3 + 3y.................................... equation3

substitute for x in equation 1

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2(3+3y) + 3y = 15

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divide both sides by the coefficient of y

9y/9 = 9/9

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put y = 1 in equation 3

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x = 3 + 3(1)

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x = 6

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The Answer is $102.82

7 0
3 years ago
I can’t figure this out please help me out
fomenos

Answer:

The answer is -1\4

Step-by-step explanation:

because its negative you can't expect it  to be positive 1\4 and its the only one that made sense

3 0
3 years ago
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