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4 years ago

Please help asap,the first person will get the brianlist plz,answer all of the 5 questions

Mathematics

2 answers:

almond37 [142]4 years ago

7 0

Step-by-step explanation:

1:d

2:c

3:a

5:b

i think so

Katarina [22]4 years ago

7 0

Answer:

1 A.

2. D

3. B

4. C

5. A,B

Step-by-step explanation:

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WILL GIVE BRAINLIEST PLZZZZZZ HELP

tekilochka [14]

Answer:

m=4

Step-by-step explanation:

to find the slope m take two points : (17,68). (20,80)

m=y2-y1/x2-x1

m=80-68/20-17=12/3= 4

m=4

y=4x

7 0

4 years ago

For each vector field f⃗ (x,y,z), compute the curl of f⃗ and, if possible, find a function f(x,y,z) so that f⃗ =∇f. if no such f

butalik [34]

$\vec f(x,y,z)=(2yze^{2xyz}+4z^2\cos(xz^2))\,\vec\imath+2xze^{2xyz}\,\vec\jmath+(2xye^{2xyz}+8xz\cos(xz^2))\,\vec k$

Let

$\vec f=f_1\,\vec\imath+f_2\,\vec\jmath+f_3\,\vec k$

The curl is

$\nabla\cdot\vec f=(\partial_x\,\vec\imath+\partial_y\,\vec\jmath+\partial_z\,\vec k)\times(f_1\,\vec\imath+f_2\,\vec\jmath+f_3\,\vec k)$

where $\partial_\xi$ denotes the partial derivative operator with respect to $\xi$ . Recall that

$\vec\imath\times\vec\jmath=\vec k$

$\vec\jmath\times\vec k=\vec i$

$\vec k\times\vec\imath=\vec\jmath$

and that for any two vectors $\vec a$ and $\vec b$ , $\vec a\times\vec b=-\vec b\times\vec a$ , and $\vec a\times\vec a=\vec0$ .

The cross product reduces to

$\nabla\times\vec f=(\partial_yf_3-\partial_zf_2)\,\vec\imath+(\partial_xf_3-\partial_zf_1)\,\vec\jmath+(\partial_xf_2-\partial_yf_1)\,\vec k$

When you compute the partial derivatives, you'll find that all the components reduce to 0 and

$\nabla\times\vec f=\vec0$

which means $\vec f$ is indeed conservative and we can find $f$ .

Integrate both sides of

$\dfrac{\partial f}{\partial y}=2xze^{2xyz}$

with respect to $y$ and

$\implies f(x,y,z)=e^{2xyz}+g(x,z)$

Differentiate both sides with respect to $x$ and

$\dfrac{\partial f}{\partial x}=\dfrac{\partial(e^{2xyz})}{\partial x}+\dfrac{\partial g}{\partial x}$

$2yze^{2xyz}+4z^2\cos(xz^2)=2yze^{2xyz}+\dfrac{\partial g}{\partial x}$

$4z^2\cos(xz^2)=\dfrac{\partial g}{\partial x}$

$\implies g(x,z)=4\sin(xz^2)+h(z)$

Now

$f(x,y,z)=e^{2xyz}+4\sin(xz^2)+h(z)$

and differentiating with respect to $z$ gives

$\dfrac{\partial f}{\partial z}=\dfrac{\partial(e^{2xyz}+4\sin(xz^2))}{\partial z}+\dfrac{\mathrm dh}{\mathrm dz}$

$2xye^{2xyz}+8xz\cos(xz^2)=2xye^{2xyz}+8xz\cos(xz^2)+\dfrac{\mathrm dh}{\mathrm dz}$

$\dfrac{\mathrm dh}{\mathrm dz}=0$

$\implies h(z)=C$

for some constant $C$ . So

$f(x,y,z)=e^{2xyz}+4\sin(xz^2)+C$

3 0

4 years ago

A student uses the triangle shown to calculate (A). Find and explain the student's error.

prisoha [69]

the angle between the known sides is not right angle

4 0

3 years ago

A hydrogen atom is about 5×10 to the -11 power

Olegator [25]

Factors are numbers that can be multiplied by an integer to obtain the desired integer

The size of the human hair is <u>1.0 × 10⁻⁴ meters </u>

Reason:

The given parameters are;

The size of an hydrogen atom is 5 × 10⁻¹¹ meters

The width of the human hair is 6 times as big

Therefore, we have;

The width of the human hair is 2 × 10⁶ times as big, therefore, we have;

The size of the human hair = 5× 10⁻¹¹ × 2 × 10⁶ = 1.0 × 10⁻⁴

The size of the human hair is <u>1.0 × 10⁻⁴ meters</u>

Learn more about factors here:

brainly.com/question/17176261

8 0

3 years ago

HELP ASAP!!!!!

8_murik_8 [283]

Answer:

Well, the answer to 17 divided by 2635 is 155, however, the number in the box must be 850, I believe.

935 subtracted by 850 equals 85 divided by 17 equals 0.

I hope this was helpful!

7 0

4 years ago