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aleksley [76]
3 years ago
6

A scientist is conducting an experiment on two types of bacteria to determine which type will grow faster in a pool. After colle

cting data for two weeks, she finds that she can model the growth rates as follows: Bacteria 1: y = 4x Bacteria 2: y = 4x2 In these models, y represents the number of bacteria colonies and x represents the number of hours. Based on these models, which type of bacteria is growing faster? bacteria 1
Mathematics
2 answers:
Igoryamba3 years ago
7 0

Answer:

bacteria 1

Step-by-step explanation:

hope this helped:)

Allushta [10]3 years ago
5 0

Answer: bacteria 2

Step-by-step explanation:

Since the growth rates are modeled as : Bacteria 1: y = 4x

And Bacteria 2: y = 4x2

Where y represents the number of bacteria colonies and x represents the number of hours.

Let's plug in for the two models

By assuming x = 2 and x = 3

If x = 2

Bacteria 1 will be y = 8 and bacteria 2 will be y = 16

Based on these models, bacteria 2 is growing faster than bacteria 1 because the growth is exponential

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Based on the sample of 500 people, 42% owned cats. Calculate the test statistic. Round to two decimal places.
Tanzania [10]

Answer:

z= 3.63

z for  significance level = 0.05 is ± 1.645

Step-by-step explanation:

Here p = 42% = 0.42

n= 500

We formulate our null and alternative hypotheses as

H0: p= 0.42     against Ha : p> 0.42 One tailed test

From this we can find q which is equal to 1-p= 1-0.42 = 0.58

Taking p`= 0.5

Now using the z  test

z= p`- p/ √p(1-p)/n

Putting the values

z= 0.5- 0.42/ √0.42*0.58/500

z= 0.5- 0.42/ 0.0220

z= 3.63

For one tailed test the value of z for  significance level = 0.05 is ± 1.645

Since the calculated value does not fall in the critical region we reject our null hypothesis  and accept the alternative hypothesis that more than 42%  people owned cats.

4 0
4 years ago
Help with both questions offering 10 points
Alexandra [31]

Answer:

\:\mathrm{First\: problem:\:}-2,\\\:\mathrm{Second\: problem:\: }-3

Step-by-step explanation:

The slope of a line passing through points (x_1, y_1) and (x_2, y_2) is:

m=\frac{\Delta y}{\Delta x}=\frac{y_2-y_1}{x_2-x_1}

Plugging in any two points in the table we have:

<u>First problem:</u>

<u />m=\frac{1-5}{2-0}=\frac{-4}{2}=\fbox{$-2$}<u />

<u>Second problem:</u>

<u />m=\frac{-1-5}{2-0}=\frac{-6}{2}=\fbox{$-3$}<u />

8 0
3 years ago
Read 2 more answers
Please help asap ill give brainliest :c
Naily [24]

Answer:

Hey there!

You're answer is 1/20.

Step-by-step explanation:

If Mrs. Williams has 1/4 gallon of juice, 1/4 divided by 5 = 1/20.

4 0
3 years ago
Read 2 more answers
Given cos 0 = 3/5 and 0 is in Quadrant I, what is the value of tan 0 ?
olga_2 [115]

Answer:

4 / 3

Step-by-step explanation:

cos θ = 3 / 5

cos 53 = 3 / 5

θ = 53

tan θ = sin θ / cos θ

sin 53 = 4 / 5

tan 53 = sin 53 / cos 53

= ( 4 / 5 ) / ( 3 / 5 )

= ( 4 / 5 ) x ( 5 / 3 )

= ( 4 x 5 ) / ( 5 x 3 )

tan 53 = 4 / 3

4 0
3 years ago
PLS HELP !!!!!! ILL GIVE BRAINLY
eduard

Answer:

The characteristics of a directly proportional relationship graph: Linear Function. Passes through the origin(root at [independent variable] = 0]) Slope equal to ratio between y and x (y:x or y/x)

Step-by-step explanation:

5 0
3 years ago
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