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3 years ago

7

I NEED HELP ASAP!! will be willing to mark you brainliest!

1 answer:

Softa [21]3 years ago

5 0

Answer:

8/75

Step-by-step explanation:

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Which system of linear equations is graphed below

Komok [63]

Answer:

D

Step-by-step explanation:

7 0

3 years ago

What is the approximate diameter of a tire that will make 775 complete rotations in one mile? (Note: there are 5280 feet

GalinKa [24]

Answer:

About 2.17 feet.

Step-by-step explanation:

Let <em>d</em> represent the diameter of the tire.

Then the circumference of the tire will be:

$C=d\pi$

So, the tire will travel dπ miles after one rotation.

After 775 rotations, the total miles traveled should be 5280 feet. Thus:

$775(d\pi)=5280$

Solve for <em>d:</em>

<em /> $\displaystyle d=\frac{5280}{775\pi}$ <em />

Approximate:

$d=2.1686...\approx2.17$

The circumference of the tire should be about 2.17 feet.

5 0

2 years ago

For each of the following vector fields

olga nikolaevna [1]

(A)

$\dfrac{\partial f}{\partial x}=-16x+2y$

$\implies f(x,y)=-8x^2+2xy+g(y)$

$\implies\dfrac{\partial f}{\partial y}=2x+\dfrac{\mathrm dg}{\mathrm dy}=2x+10y$

$\implies\dfrac{\mathrm dg}{\mathrm dy}=10y$

$\implies g(y)=5y^2+C$

$\implies f(x,y)=\boxed{-8x^2+2xy+5y^2+C}$

(B)

$\dfrac{\partial f}{\partial x}=-8y$

$\implies f(x,y)=-8xy+g(y)$

$\implies\dfrac{\partial f}{\partial y}=-8x+\dfrac{\mathrm dg}{\mathrm dy}=-7x$

$\implies \dfrac{\mathrm dg}{\mathrm dy}=x$

But we assume $g(y)$ is a function of $y$ alone, so there is not potential function here.

(C)

$\dfrac{\partial f}{\partial x}=-8\sin y$

$\implies f(x,y)=-8x\sin y+g(x,y)$

$\implies\dfrac{\partial f}{\partial y}=-8x\cos y+\dfrac{\mathrm dg}{\mathrm dy}=4y-8x\cos y$

$\implies\dfrac{\mathrm dg}{\mathrm dy}=4y$

$\implies g(y)=2y^2+C$

$\implies f(x,y)=\boxed{-8x\sin y+2y^2+C}$

For (A) and (C), we have $f(0,0)=0$ , which makes $C=0$ for both.

4 0

3 years ago

? :))))))))))))))))))))))

konstantin123 [22]

Answer:

H my friend

Step-by-step explanation:

H is the answer

8 0

3 years ago

What is the value of x in the equation 3x-4y=65, when y equals 4?

andreev551 [17]

Answer:

x = 27

Step-by-step explanation:

3x - 4y = 65

3x = 65 + 4y

<em><u>Find x, when y = 4</u></em>

3x = 65 + 4 (4)

3x = 65 + 16

3x = 81

x = 27 $[ \ x = \frac{81}{3}\ ]$

5 0

3 years ago