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3 years ago

13

A bacteria culture begins with 8 bacteria which triple in size every week. How many bacteria exist in the culture after 4 weeks?

512 648 12,288 26,244

2 answers:

77julia77 [94]3 years ago

8 0

the answer to this question is 648

Anika [276]3 years ago

4 0

The answer should be 648

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Evaluate g(-4) when g(b)<br> =<br> - 4(12.5b - 2)<br><br> Can someone help please?

Stolb23 [73]

The answer to your problem is 50b+8

3 0

3 years ago

Let v be an eigenvector of a matrix A with a corresponding eigenvalue ?=2. Find one solution x of the system Ax=v.

Murljashka [212]

Answer with explanation:

For, a Matrix A , having eigenvector 'v' has eigenvalue =2

The order of matrix is not given.

It has one eigenvalue it means it is of order , 1×1.

→A=[a]

Determinant [a-k I]=0, where k is eigenvalue of the given matrix.

It is given that,

k=2

For, k=2, the matrix [a-2 I] will become singular,that is

→ Determinant |a-2 I|=0

→I=[1]

→a=2

Let , v be the corresponding eigenvector of the given eigenvalue.

→[a-I] v=0

→[2-1] v=[0]

→[v]=[0]

→v=0

Now, corresponding eigenvector(v), when eigenvalue is 2 =0

We have to find solution of the system

→Ax=v

→[2] x=0

→[2 x] =[0]

→x=0, is one solution of the system.

5 0

3 years ago

Bruh I’m so confused on how to do this

Dmitrij [34]

Rotation doesn't matter for this question... <em>The dilation is key... you made each side of the triangle 4 times bigger</em>

<h3>Answer:</h3>

A. False:

$Area= \frac12 \times base \times height$ .... if the base is 4 times bigger and the height is 4 times bigger .... <em>the area will be </em><em>16</em><em> times bigger</em>

B. True .... you just add all sides, each is 4 times bigger

C. False ... by definition of dilation, the sides grew

D. True... Size changed, but the shape stayed the same (so, did the angles)

3 0

2 years ago

2 1/3 divided by y= -1.27272727<br> what does y equal

Semmy [17]

Answer:

-1.83337261989

Step-by-step explanation:

(2 1/3)/y=-1.272727

2 1/3 = -1.272727y

y=-1.83337261989

6 0

3 years ago

Write the standard form of the equation of the line through the given point with the given slope. Through (-2,5), slope =-4

AleksandrR [38]

Answer:

$\huge\boxed{4x+y=-3}$

Step-by-step explanation:

The point-slope form of an equation of a line:

$y-y_1=m(x-x_1)$

<em>(x₁, y₁)</em><em> - point on a line</em>

<em>m</em><em> - slope</em>

<em />

We have

$m=-4,\ (-2,\ 5)\to x_1=-2,\ y_1=5$

Substitute:

$y-5=-4(x-(-2))\\\\y-5=-4(x+2)$

Convert to the standard form

$Ax+By=C$

$y-5=-4(x+2)$ <em> use the distributive property</em>

$y-5=(-4)(x)+(-4)(2)$

$y-5=-4x-8$ <em>add 5 to both sides</em>

$y-5+5=-4x-8+5$

$y=-4x-3$ <em>add 4x to both sides</em>

$4x+y=-4x+4x-3\\\\4x+y=-3$

3 0

3 years ago