Negative three plus x equals eleven

Mathematics

2 answers:

krek1111 [17]3 years ago

4 0

It would be 14 because since you have a -3 you would add that to 11 which would be 14

skad [1K]3 years ago

3 0

-3 + x = 11
x = 11 + 3
x = 14

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What is the derivative of y with respect to x if y = 2/X4

zepelin [54]

You're correct, the answer is C.

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$\frac{dy}{dx}=nx^n^-^1$

In which $n$ is any constant, this is called the power rule for differentiation.

For this example we have $y= \frac{2}{x^4}$ , first lets get rid of the quotient and write the expression in the form $y=x^n$ :
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Now we can directly apply the rule stated at the beginning (in which $n=-4$ ):
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6 0

3 years ago

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tangare [24]

Answer:

The possible parking lengths are 45.96 feet and 174.031 feet

Step-by-step explanation:

Let x be the length of rectangular plot and y be the breadth of rectangular plot

A rectangular parking lot must have a perimeter of 440 feet

Perimeter of rectangular plot =2(l+b)=2(x+y)=440

2(x+y)=440

x+y=220

y=220-x

We are also given that an area of at least 8000 square feet.

So, $xy \leq 8000$

So, $x(220-x) \leq 8000$

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So, $220x-x^2 = 8000\\-x^2+220x-8000=0$

General quadratic equation : $ax^2+bx+c=0$

Formula : $x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}$

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