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larisa [96]
3 years ago
7

6(7x + 7) = 7(6x + 6)

Mathematics
1 answer:
Marina CMI [18]3 years ago
3 0

Answer:

i would have to say x= -1

Step-by-step explanation:

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Find the directional derivative of f(x,y,z)=2z2x+y3f(x,y,z)=2z2x+y3 at the point (−1,4,3)(−1,4,3) in the direction of the vector
Feliz [49]

f(x,y,z)=2z^2x+y^3

f has gradient

\nabla f(x,y,z)=2z^2\,\vec\imath+3y^2\,\vec\jmath+4xz\,\vec k

which at the point (-1, 4, 3) has a value of

\nabla f(-1,4,3)=18\,\vec\imath+48\,\vec\jmath-12\,\vec k

I'm not sure what the given direction vector is supposed to be, but my best guess is that it's intended to say \vec u=15\,\vec\imath+25\,\vec\jmath, in which case we have

\|\vec u\|=\sqrt{15^2+25^2}=5\sqrt{34}

Then the derivative of f at (-1, 4, 3) in the direction of \vec u is

D_{\vec u}f(-1,4,3)=\nabla f(-1,4,3)\cdot\dfrac{\vec u}{\|\vec u\|}=\boxed{\dfrac{294}{\sqrt{34}}}

4 0
3 years ago
a person bought two watches for 2500, she sold one of them at 10% profit & the other one at 4% loss. what was her gain or lo
Zepler [3.9K]

Answer:

profit : RS 150 and profit % : 3%

Step-by-step explanation:

for profit 10% for loss 4%

s.p will be 2750. s.p will be 2400

Total s.p : 2750 +2400. total s.p : 5150

profit = s.p-c.p. profit%=?

=5150-5000. profit = p /c.p × 100

=150 = 150/5000×100

= 3%

8 0
2 years ago
HELP MARK BRANLIEST AND ALSO POINTS
Taya2010 [7]

Answer:

25 rides

Step-by-step explanation:

has $28.50

15.75 + 0.50r \leq 28.50

Subtract 15.75

0.50r \leq 12.75

r \leq 25.5

you can't have half rides, so 25 rides

4 0
2 years ago
A little help please!!
Bumek [7]

Answer:

x=4 y=1

x=4 y=4

Step-by-step explanation:

x=4 goes on plot 4

(4,f(4)) plot goes on 4 x, 4 and y, 4

hope this helps

4 0
2 years ago
What is the value of this expression?<br><br> (37)0<br><br><br> 0<br><br> 37<br><br> 1<br><br> 307
Anni [7]

37^0 = 1

Any number to the 0 exponent is equal 1, except 0

Answer

1

5 0
3 years ago
Read 2 more answers
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