Evaluate -9x-2 when x =-4

Answer:

If  [tex]e^{x\cdot y}-y^{2} = e-4[/tex], then at  [tex]x = \frac{1}{2}[/tex] and [tex]y = 2[/tex], [tex]\frac{dy}{dx} \approx 2.059[/tex].

Step-by-step explanation:

Let [tex]e^{x\cdot y}-y^{2} = e-4[/tex]. At first we determine the first derivative of the function by implicit differentiation:

[tex]e^{x\cdot y}\cdot \left(y+x\cdot \frac{dy}{dx} \right)-2\cdot y \cdot \frac{dy}{dx} = 0[/tex]

[tex]y\cdot e^{x\cdot y}+x\cdot e^{x\cdot y}\cdot \frac{dy}{dx} -2\cdot y\cdot \frac{dy}{dx} = 0[/tex]

[tex]y\cdot e^{x\cdot y}= (2\cdot y -x\cdot e^{x\cdot y})\cdot \frac{dy}{dx}[/tex]

[tex]\frac{dy}{dx} = \frac{y\cdot e^{x\cdot y}}{2\cdot y - x\cdot e^{x\cdot y}}[/tex]

If we know that [tex]x = \frac{1}{2}[/tex] and [tex]y = 2[/tex], then the computed value of the function is:

[tex]\frac{dy}{dx} = \frac{(2)\cdot e^{\left(\frac{1}{2} \right)\cdot (2)}}{2\cdot (2)-\left(\frac{1}{2} \right)\cdot e^{\left(\frac{1}{2} \right)\cdot (2)}}[/tex]

[tex]\frac{dy}{dx} \approx 2.059[/tex]

If  [tex]e^{x\cdot y}-y^{2} = e-4[/tex], then at  [tex]x = \frac{1}{2}[/tex] and [tex]y = 2[/tex], [tex]\frac{dy}{dx} \approx 2.059[/tex].

Answer:

I am not certain but I think it's y=2x+4 I don't know tho but I think that's it

Answer:

the number of grams of zinc contain is 78

Step-by-step explanation:

The computation of the number of grams of zinc contain is shown below:

Given that the ratio of zinc to copper is 3:16

And, the jar of the chemical has 416 grams copper

So, the number of zinc grams would be

here we assume the zinc grams be x

Now the equation would be

3 ÷ 16 = x ÷ 416

Now applied the cross multiplication

16x = 416 × 3

x = (416 × 3) ÷ 16

= 78

Therefore the number of grams of zinc contain is 78

Answer:

hi

Step-by-step explanation:

pog

Answer:

otay

Step-by-step explanation:

Answer:

651651616516

Step-by-step explanation:

56465

Answer:

omg how dum r u the answer is 23 JK its 10

Step-by-step explanation:

Answer:

H=horse

H=4(21-7)

Step-by-step explanation:

H=4(21-7)

H=4(14)

There were 56 horses.

Answer:

The answer is in the 4th quadrant

Step-by-step explanation:

I really hope this helped!!! have a great day. :)

The residual value of 0.8 mean in reference to the line of best fits shows that the given point is 0.8 units below the line of best fit.

The residual value is known to be  the approximated or estimated value of any kind of fixed asset that is done at the end of its lease term or at the end of its useful life.

Note therefore that the residual value of 0.8 mean in reference to the line of best fits shows that the given point is 0.8 units below the line of best fit.

Learn more about residual value from

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Answer:

B

Step-by-step explanation:

Got it right edge 2022

Answer:

DONE!

Step-by-step explanation:

67132/7 = 9590.28571429

Rounded to the nearest tenth: 9590.3

Answer:

9590.3

Step-by-step explanation:

finally got to answer lol

59.9%

Sorry I don’t have time to explain in the middle of an exam

The rate of growth needs to be 59.9%.

The formula used to determine the future value of an investment when interest is compounded continuously is:

FV =  A x [tex]e^{r}[/tex] x N

$320,000 = $16,000 x [tex]e^{r}[/tex] x 5

Divide both sides by $16,000

20 = 5[tex]e^{r}[/tex]

Take the In of both sides

In(20) = 5r

Divide both sides by 5

r = 59.9%

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Answer:

vdsv

Step-by-step explanation:

Answer:

16(y+2)

Step-by-step explanation:

Answer: C=3

Step-by-step explanation:

8C-4=20

  +4     +4

8C=24

/8     /8

C=3

Answer:

3 is continous. 4 is discrete

Step-by-step explanation:

3 houses 2 terms, therefore continuing it. 4 houses 1, stopping the graph.

I might be dumb

Two sides are congruent to each other.

The third side of an isosceles triangle which is unequal to the other two sides is called the base of the isosceles triangle.

A right triangle (American English) or right-angled triangle (British English) is a triangle in which one angle is a right angle (that is, a 90-degree angle). The relation between the sides and angles of a right triangle is the basis for trigonometry.

A triangle with all sides of different lengths. All angles are different, too. So no sides are equal and no angles are equal.

HOPE IT HELPS YOU OUT PLEASE MARK IT AS BRAINLIEST AND FOLLOW ME PROMISE YOU TO FOLLOW BACK ON BRAINLY.IN

Answer:

Two sides are congruent to each other.

The third side of an isosceles triangle which is unequal to the other two sides is called the base of the isosceles triangle.

A right triangle (American English) or right-angled triangle (British English) is a triangle in which one angle is a right angle (that is, a 90-degree angle). The relation between the sides and angles of a right triangle is the basis for trigonometry.

A triangle with all sides of different lengths. All angles are different, too. So no sides are equal and no angles are equal.

Step-by-step explanation:

Answer:

<1=83

<2=97

<3= 83 (given)

<4=97

<5=83

<6=97

<7=83

<8=97

Step-by-step explanation:

They give you the angle for 3 which is 83, so from there all you have to do is find the equivalent angles which are angle 1,5,7. Then for angles 2,4,6,8 you subtract 83 from 180 and you get 97.

Answer:

i wish i could simply life.

Step-by-step explanation:

Answer:

[tex]\frac{dy}{dx} = 18x - 1[/tex]

Step-by-step explanation:

[tex]y = \frac{9x^{4} - x^{3}}{x^{2} }\\\\y = \frac{9x^{4}}{x^{2} } - \frac{x^{3}}{x^{2} } \\\\y = 9x^{2} - x\\\\\frac{dy}{dx} = 18x - 1[/tex]

Answer:

2+6+8

Step-by-step explanation:

I hope this Helps c:

Answer:

120,000

Step-by-step explanation:

8 times 10 to the 4th power is 80,000 and 4 times 10 to the 4th power is 40,000 and 80,000 plus 40,000 is 120,000

Answer:

[tex]10^{-6}[/tex]

Step-by-step explanation:

Start with 0000008.0

For each decimal place you move back, subtract the exponent (the n value of [tex]10^n[/tex]) by 1. In this case, we move back 6 places. This makes n = 6, giving us an answer of [tex]10^{-6}[/tex].

Answer: -6

Step-by-step explanation:

Answer:

f = - 2.7

Step-by-step explanation:

15 + 10f = -12

10f = -12 - 15

f = -27/10

f = - 2.7

Answer:

The answer to your question is B.

Answer:

[tex]y=x^2-8x+25[/tex]

Step-by-step explanation:

To answer this question, we will work backwards.

We know that a factor is 4+3i. This means that:

[tex](x-(4+3i))=0[/tex]

Hence, we will eliminate the imaginary and convert this into standard form.

First, distribute the negative:

[tex]x-4-3i=0[/tex]

Add 3i to both sides:

[tex]x-4=3i[/tex]

Square both sides:

[tex](x-4)^2=(3i)^2[/tex]

Expand:

[tex]x^2-8x+16=9(-1)=-9[/tex]

Add 9 to both sides:

[tex]x^2-8x+25=0[/tex]

Hence, our quadratic equation is:

[tex]y=x^2-8x+25[/tex]

Notes:

We will get the same equation if we use (4-3i). This is because we square the (3i) regardless of its sign, making it positive.

Answer:

12

Step-by-step explanation:

Answer:

£12

Step-by-step explanation:

It's asking us to find the 30% of the 40 and to do this we multiply 40 by 30 then divide it by 100

40 × 30 ÷ 100 = 12

Answer:

2/3

Step-by-step explanation:

Hope This Helps