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3 years ago

5

Is there a white culture?

2 answers:

zhannawk [14.2K]3 years ago

8 0

I don’t think so because I have never hear of that

Romashka [77]3 years ago

3 0

Answer:

no, there is no white culture.

Step-by-step explanation:

hope this helps! :)

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Damon plotted a point on the grid. He says that the first number of the ordered pair is negative and the second number is positi

-Dominant- [34]

Answer: The point would be anywhere in the 2 quadrant.

Step-by-step explanation: Since the first number in the ordered pair is negative then it'll be in the 2nd or 3rd quadrant, and since the second pair is positive then it'll be in the 2 quadrant.

Comment if you didn't get it. :)

6 0

3 years ago

I will give brainliest pls help

ahrayia [7]

Answer:

$Slope= -1$

Step-by-step explanation:

<u>Step 1: Find the slope</u>

<u /> $Slope\ Formula: \frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

<u>Plug in the numbers and solve.</u>

<u /> $Slope= \frac{-6-(-5)}{6-5}$

$Slope= \frac{-1}{1}$

$Slope= -1$

Answer: $Slope= -1$

3 0

3 years ago

Suppose that a Petri dish initially contains 2000 bacteria cells. An antibiotic is introduced and after 4 hour, there are now 16

Sergeu [11.5K]

Answer:

a)The linear function for $P(t)$ is:

$P(t) = 2000 - 100*t$

b)The exponential function for $P(t)$ is:

$P(t) = 2000e^{-0.055t}$

Step-by-step explanation:

(a) Suppose that P(t) is a linear function. Find a formula for P(t):

$P(t)$ can be modeled by a linear function in the following format.

$P(t) = P_{0} - r*t$ , in which $P_{0}$ is the initial number of bacteria cells in the dish, t is the time and r is the rate that the number decreases.

Since the dish initially contains 2000 bacteria cells, $P_{0} = 2000$

We have

$P(t) = 2000 - r*t$

An antibiotic is introduced and after 4 hour, there are now 1600 bacteria cells present. So $P(4) = 1600$ . With this information, we can find the value of r.

$P(t) = 2000 - r*t$

$1600 = 2000 - r*(4)$

$4r = 400$

$r = \frac{400}{4}$

$r = 100$

So, the linear function for $P(t)$ is:

$P(t) = 2000 - 100*t$

b) Suppose that P(t) is an exponential function. Find a formula for P(t)

$P(t)$ can also be modeled by an exponential function in the following format:

$P(t) = P_{0}e^{rt}$

The values mean the same as in a). We use the fact that $P(4) = 1600$ to find r.

$P(t) = 2000e^{rt}$

$1600 = 2000e^{4r}$

$e^{4r} = \frac{1600}{2000}$

$e^{4r} = 0.8$

$ln e^{4r} = ln 0.8$

$4r = -0.22$

$r = \frac{-0.22}{4}$

$r = -0.055$

So, the exponential function for $P(t)$ is:

$P(t) = 2000e^{-0.055t}$

5 0

4 years ago

What is the slope of the line x = 4?

rewona [7]

The slope is undefined because you need a y intercept as well.

8 0

3 years ago

The cost for groceries was $11.20 before sales tax. How much was the total cost

aleksandrvk [35]

Answer: $11.76

Step-by-step explanation:

5% = 0.05

11.20 x 0.05 = .56

11.20 + 0.56 = 11.76

7 0

3 years ago