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3 years ago

5

Why is a graphical solution not always appropriate for a system of equations?

1 answer:

BigorU [14]3 years ago

4 0

Answer:

because it may not be suitable for all the time

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Find the maximum rate of change of f(x,y,z=x y/z at the point (2, -3, 5 and the direction in which it occurs. maximum rate of ch

kherson [118]

$f(x,y,z)=x+\dfrac yz$
$\implies \nabla f(x,y,z)=\left(1,\dfrac1z,-\dfrac y{z^2}\right)$
$\implies \nabla f(2,-3,5)=\left(1,\dfrac15,\dfrac3{25}\right)$

The maximum rate of change is then

$\|\nabla f(2,-3,5)\|=\dfrac{\sqrt{659}}{25}$

which occurs in the direction of $\nabla f(2,-3,5)$ above.

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3 years ago

Simplify the algebraic expression.<br> 6n+5(10n-7)

kherson [118]

Answer:

56n - 35

Step-by-step explanation:

6n + 5(10n - 7) ← multiply each term in the parenthesis by 5

= 6n + 50n - 35 ← collect like terms

= 56n - 35

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2 years ago

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Jeffrey has a dog that weighs 3 times as much as Sarah's dog. The total weight of both dogs is 64 lb. How much does Jeffrey's Do

Fiesta28 [93]

64×3=192 you can do 64+64+64 and you get 192

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3 years ago

Laine read 25 pages in 30 minutes. if laine reads 200 pages at this same rate how long will it take her?

QveST [7]

That is the answer I got

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3 years ago

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Each leg of an isosceles triangle is 4 meters longer than the base.the perimeter of the triangle is 26meters. Find the lengths o

Natali5045456 [20]

Because the triangle is isosceles, we know that it has 2 equal sides, which are the 2 legs. We can create an equation with the given information:

26 = 2(b + 4) + b

26 = 3b + 8

18 = 3b

b = 6

If the base is 6, add 4 to get 10.

base = 6 meters

leg = 10 meters

other leg = 10 meters

<em>Hope this helps! :)</em>

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3 years ago