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2 years ago

After 3 hours, a bacteria colony has (25^3)^3 bacteria present. How many bacteria are in the colony

Mathematics

1 answer:

inn [45]2 years ago

5 0

Answer:

25^9

Step-by-step explanation:

(25^3)^3 = 25^(3 * 3) = 25^9

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Please Help Fast!!! 20 points <br> Solve the system of equations: <br> 25−x=−4y<br> 3x−2y=30

gogolik [260]

Answer:

(7, -4.5)

Step-by-step explanation:

25−x=−4y ---> x=25+4y

3x−2y=30

use x to substitute into the second equation

3 (25+4y)-2y = 30

75+12y-2y=30

75+10y=30

10y=-45

y=-4.5

3x-2(-4.5)=30

3x+9=30

3x=21

x=7

check:

25-7=-4*-4.5

18=18 (yes)

3*7-2*-4.5=30

21+9=30

30=30 (yes)

6 0

3 years ago

Find the first partial derivatives of the function f(x,y,z)=4xsin(y−z)

Amanda [17]

Answer:

$f_x(x,y,z)=4\sin (y-z)$

$f_x(x,y,z)=4x\cos (y-z)$

$f_z(x,y,z)=-4x\cos (y-z)$

Step-by-step explanation:

The given function is

$f(x,y,z)=4x\sin (y-z)$

We need to find first partial derivatives of the function.

Differentiate partially w.r.t. x and y, z are constants.

$f_x(x,y,z)=4(1)\sin (y-z)$

$f_x(x,y,z)=4\sin (y-z)$

Differentiate partially w.r.t. y and x, z are constants.

$f_y(x,y,z)=4x\cos (y-z)\dfrac{\partial}{\partial y}(y-z)$

$f_y(x,y,z)=4x\cos (y-z)$

Differentiate partially w.r.t. z and x, y are constants.

$f_z(x,y,z)=4x\cos (y-z)\dfrac{\partial}{\partial z}(y-z)$

$f_z(x,y,z)=4x\cos (y-z)(-1)$

$f_z(x,y,z)=-4x\cos (y-z)$

Therefore, the first partial derivatives of the function are $f_x(x,y,z)=4\sin (y-z), f_x(x,y,z)=4x\cos (y-z)\text{ and }f_z(x,y,z)=-4x\cos (y-z)$ .

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3 years ago

A.140 B. 60 C.120 or D.40 ?

GalinKa [24]

Answer:

A-140

Step-by-step explanation:

A starts at 0 and from the side you're measuring it would be 140 and not 40.

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2 years ago

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taurus [48]

Answer:

score of a certain Line?

Step-by-step explanation:

If you wanted a translation, that's your answer!

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3 years ago

What is the Square root of 81

Alexeev081 [22]

The answer is 9, hope this helps

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3 years ago

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