A culture of bacteria in a petri dish has an initial population of 1500 cells and grows at a rate (in cells/day) of N′(t)=200(t+2)−12 Assume t is measured in days.
a) What is the population after 14 days? After 34 days?
b) Find the population N(t) at any time t≥0

the distance from each chord to the center of the circle is 85 inches.

what is  chord ?

In geometry, a chord is a line segment that connects two points on the circumference of a circle. It is the straight line that intersects a circle at two points. In other words, a chord is a line segment that lies entirely inside the circle and connects two points on the circle.

In the given question,

If we draw a diagram of the circle with diameter 170 inches, we can see that the chords of length 26 inches divide the circle into two regions. We are interested in finding the distance from each chord to the center of the circle.

To solve this problem, we can use the following formula:

distance from chord to center = 1/2 * √(4r² - c²)

where r is the radius of the circle and c is the length of the chord.

First, we need to find the radius of the circle. The radius is half of the diameter, so:

r = 1/2 * diameter = 1/2 * 170 = 85 inches

Next, we can use the formula above to find the distance from each chord to the center of the circle. Plugging in the values we have:

distance from chord to center = 1/2 * √(4r² - c²)

distance from chord to center = 1/2 * √(4(85)² - 26²)

distance from chord to center = 1/2 * √(28,900)

distance from chord to center = 1/2 * 170

distance from chord to center = 85

Therefore, the distance from each chord to the center of the circle is 85 inches.

To know more about chord, visit:

https://brainly.com/question/8944240

#SPJ1

The height of the center of the Ferris wheel 51 m.

The height of capsule M is 51 m and the height of capsule T is 102 m.

Using this information, we can calculate the height of the center of the Ferris wheel, the height of capsule M, and the height of capsule T.

Height of the center of the Ferris wheel:

The center of the Ferris wheel is the midpoint of its diameter. Therefore, the height of the center of the Ferris wheel is half of the height of the top of the wheel above the ground.

Height of center of Ferris wheel = 102 meters / 2 = 51 meters.

Height of capsule M:

Since capsule M is at the same height as the center of the Ferris wheel, the height of capsule M is also 51 meters.

Height of capsule T:

Since capsule T is at the very top of the Ferris wheel, its height above the ground is equal to the height of the top of the Ferris wheel above the ground.

Height of capsule T = 102 meters.

Learn more about height here: https://brainly.com/question/1739912

#SPJ1

Area of sector GHJ ≈ 2.04 square units

Since we are given the central angle GHJ in degrees and the radius GH of circle H, we can find the area of sector GHJ using the formula:

Area of sector GHJ = (θ/360) × πr^2

where θ is the central angle in degrees and r is the radius.

Substituting the given values, we get:

Area of sector GHJ = (46/360) × π(4)^2

= (0.1278) × 16π

= 2.0448 square units

Rounding to the nearest hundredth, we get:

Area of sector GHJ ≈ 2.04 square units

Learn more about area of sector below.

https://brainly.com/question/31347228

#SPJ1

Answer:

the table is analysis swap around

Step-by-step explanation:

like if the input is (3,1) the output will be (1,3)

Answer: brainliest ?

-3 and -7

Step-by-step explanation:

The percent increase for the dinner is 25%

The first step is to calculate the increase

The price rose from $7 to $8.75

Increase= 8.75-7

= 1.75

Therefore the percent increase can be calculated as follows

1.75/7 × 100

= 0.25 × 100

= 25

Hence the percent increase is 25%

Read more on precent increase here
https://brainly.com/question/9257298

# SPJ1

Answer:

  x ∈ {6, 7, 8, 9, 10}

Step-by-step explanation:

You want possible values of whole number x such that ...

  4 ≤ √3 +√x < 5

We can solve this inequality by first subtracting √3 from all sides:

  4 -√3 < √x < 5 -√3

Squaring these positive numbers does not change their order:

  19 -8√3 < x < 28 -10√3

  5.14 < x < 10.67

The value of x may be any whole number in the range 6–10, inclusive.

Answer:

Option (3)

Step-by-step explanation:

Option (3) is not an equation. It is an expression. An equation is a mathematical statement where two expressions are equal to each other connected by an equal sign. In option (1), 3+1 is equal to 4+0 so it is an equation. In option (2), x2-2x is equal to 8, so it is also an equation. In option (4), 1+3 is equal to 6, so it is an equation, though it is not a true statement. However, in option (3), there is no equal sign, so it is not an equation. It is an expression that simplifies to 8x+2.

Answer:

the pressure of the gas at a volume of 16 L would be 28 kPa.

Step-by-step explanation:

Using Boyle's Law:

P1V1 = P2V2

Where:

P1 = 112 kPa (initial pressure)

V1 = 4 L (initial volume)

V2 = 16 L (final volume)

Solving for P2:

P2 = (P1 x V1) / V2

P2 = (112 kPa x 4 L) / 16 L

P2 = 28 kPa

Therefore, the pressure of the gas at a volume of 16 L would be 28 kPa.

The length of the radius of the cylinder with a volume of 490π cubic inches and a height of 10 inches is 7 inches.

The formula for the volume of a cylinder is V = πr²h,in which r= radius , h= cylinder height. Now we can rearrange formula by equating for r which gives the following formula:

V = πr²h

r² = V/(πh)

r = √(V/(πh))

By putting the values in the formula we can get:

r = √(490π/(π*10))

r = √49

r = 7

Therefore, the length of the radius is 7 inches.

Cylinder's volume can be viewed as the area that it takes up. It is computed by dividing the cylinder's height by the base's area, which is a circle. In this instance, we are informed that the height is 10 inches and the capacity is 490 cubic inches.

learn more about Cylinder's volume here:

https://brainly.com/question/8861672

#SPJ1

After calculating the 90% confident true mean income per month of a person who works from home in sales falls between $2146.47 and $2553.53.

To calculate the 90% confidence interval for the true mean income per month of a person who works from home in sales, we can use the following formula:

[tex]CI = X' ± Z\frac{a}{2}[/tex] * (σ/√n)

here:
X' = sample mean
Zα/2 = z-score that corresponds to the desired level of confidence (in this case, 90%)
σ = population standard deviation
n = sample size

Placing the  values

CI = 2350 ± 1.645 * (175 / √12)
= [2146.47, 2553.53]

After calculating the 90% confident true mean income per month of a person who works from home in sales falls between $2146.47 and $2553.53.
To learn more about standard deviation
https://brainly.com/question/475676
#SPJ4

The integer conversion specifier that would display the hexadecimal digit "a" is "x".
d) x

To display the hexadecimal digit "a" using an integer conversion specifier.
The "x" specifier is used for displaying an integer value in hexadecimal format with lowercase letters (i.e., a, b, c, etc.), while "X" would display the value in uppercase letters (i.e., A, B, C, etc.).

Options "H" and "h" are not standard integer conversion specifiers for displaying hexadecimal values.

Hence d) x is correct.

For similar question on conversion.

https://brainly.com/question/28244843

#SPJ11

Answer:

x = 3.5 pages per minute

Step-by-step explanation:

We make the relationship

21 pages ------ 6 min

x pages -------- 1 min

So x= (21x1)/(6)

x = 3.5 pages per minute

The number of permutations of the letters in the word indistinguishable such that the strings git, tin, and nab do not appear in the permutation is

3,172,973,824,000

Let A be the set of stages that contain the string "git",

B be the set of changes that contain the string "tin", and

C be the set of stages that contain the string "nab".

We need to discover the number of stages that don't contain any of these strings, which is the same as finding the measure of the set (A∪B∪C)'.

Utilizing the guideline of inclusion-exclusion, we have:

|A∪B∪C| = |A| + |B| + |C| - |A∩B| - |A∩C| - |B∩C| + |A∩B∩C|

We need to discover |(A∪B∪C)'|, which is the complement of the set A∪B∪C. In this manner:

|(A∪B∪C)'| = n! - |A∪B∪C|

Now we have to discover the measure of the sets A, B, and C, and their convergences.

For set A, able to settle the string "git" in its put in 3! ways, and after that permute the remaining 14 letters in 14! ways. In this manner, |A| = 3!×14!.

Essentially, we will discover |B| = 3!×14! and |C| = 3!×14!.

For the convergences, we are able to settle the comparing strings in their places and permute the remaining 11 letters in 11! ways. In this manner,

|A∩B| = 2!×11!,

|A∩C| = 2!×11!,

and |B∩C| = 2!×11!.

At long last, we have |A∩B∩C| = 1!×11! since we are able to settle all three strings in their places and permute the remaining 11 letters in 11! ways.

Substituting these values into the inclusion-exclusion equation, we get:

|A∪B∪C| = 3(3!×14!) - 3(2!×11!) + 1!×11!

|A∪B∪C| = 13608000

Subsequently:

|(A∪B∪C)'| = 17! - 13608000

|(A∪B∪C)'| = 3172973824000

So there are 3,172,973,824,000 permutations of the letters within the word "indistinguishable" such that the strings "git", "tin", and "nab" don't show up within the stage. 

To know more about permutations refer to this :

https://brainly.com/question/1216161

#SPJ4

Answer: a)159 boxes of cereal will be sold during the 10th week, b) an = 15n + 9

Step-by-step explanation:

[tex]cos^2(x) = cos^2(x)[/tex].

This equation is true for all values of x, so the solution is:
x ∈ ℝ (x is any real number).

To solve the equation[tex]cos^2(x)[/tex]= (power reducing formula),

we need to replace [tex]cos^2(x)[/tex] with the power reducing formula.

The power reducing formula for [tex]cos^2(x)[/tex] is:
[tex]cos^2(x) = (1 + cos(2x)) / 2[/tex]
Now, let's solve the equation:
[tex](1 + cos(2x)) / 2 = cos^2(x)[/tex]
We want to find x when this equation is true.

Since the left side is the power reducing formula for [tex]cos^2(x)[/tex],

we can simply write:
[tex]cos^2(x) = cos^2(x)[/tex].

The power reducing formula is a trigonometric identity that allows you to express a trigonometric function of a higher power in terms of a trigonometric function of a lower power.

It is most commonly used for reducing the power of the sine and cosine functions.

The power reducing formula for cosine is:

[tex]cos^2(x) = (1 + cos(2x))/2[/tex]

The power reducing formula for sine is:

[tex]sin^2(x) = (1 - cos(2x))/2[/tex]

These formulas can be derived using the Pythagorean identity, which states that [tex]sin^2(x) + cos^2(x) = 1.[/tex]

By solving for either [tex]sin^2(x) or cos^2(x)[/tex] in terms of the other, and then using the double angle formula for cosine [tex](cos(2x) = cos^2(x) - sin^2(x)),[/tex]we can arrive at the power reducing formulas.

The power reducing formulas can be used to simplify trigonometric expressions and make them easier to work with.

For example, if you have an expression such as [tex]sin^4(x)[/tex], you can use the power reducing formula for sine to express [tex]sin^4(x)[/tex] in terms of [tex]sin^2(x),[/tex]and then use the power reducing formula for cosine to express [tex]sin^2(x)[/tex]in terms of cos(2x).

This can make the expression simpler and easier to integrate or differentiate.

For similar question on equation.

https://brainly.com/question/28282187

#SPJ11

The height of the tree is 44.4 feet.

Height is the vertical distance between two points.

To calculate the height of the tree, we use the formula below

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Learn more about height here: https://brainly.com/question/25224151

#SPJ1

Trend component is easy to identify by using Moving average, Exponential smoothing, Regression analysis. So, correct options are A, B and C.

The trend component of a time series is a long-term movement in the data that represents a gradual increase or decrease over time. It is an important component of time series analysis because it can provide insights into the overall direction of the data and help forecast future trends.

One of the easiest ways to identify the trend component of a time series is by using a moving average. A moving average is a statistical method that calculates the average of a set of data over a specified period of time. By calculating the moving average, we can smooth out the short-term fluctuations in the data and identify the underlying trend.

Exponential smoothing is another method that can be used to identify the trend component of a time series. It is a forecasting technique that assigns exponentially decreasing weights to older observations, which places greater emphasis on more recent data.

This approach can help identify the trend by smoothing out the data and highlighting the underlying pattern.

Regression analysis can also be used to identify the trend component of a time series. It involves fitting a mathematical model to the data and identifying the relationship between the independent and dependent variables.

If the independent variable represents time and the dependent variable represents the data being analyzed, then regression analysis can help identify the trend component.

The Delphi approach is not typically used to identify the trend component of a time series. It is a forecasting technique that involves gathering expert opinions and using them to make predictions about future events.

In conclusion, the methods that are most commonly used to identify the trend component of a time series are moving average and exponential smoothing. Regression analysis can also be used in certain situations.

So, correct options are A, B and C.

To learn more about Trend component click on,

https://brainly.com/question/29745016

#SPJ4

Answer:

the value of x ia 7/2 and y is 5/2

The horizontal asymptote of the function f(x) = 2ˣ is y = 0.

In Mathematics and Geometry, a horizontal asymptote can be defined as a horizontal line (y = b) where the graph of a function approaches the line as the input values (domain or independent value) approach negative infinity (-∞) to positive infinity (∞).

In this context, the line passing through the ordered pair (0, 1) on the graph of this exponential growth function represents a horizontal asymptote and it has an equation of y = 0, as shown in the image attached above.

Read more on horizontal asymptote here: brainly.com/question/14492751

#SPJ1

The team that had the best overall record for the season is Panthers. Therefore the best way to explain the answer B. Panthers; they have a larger mean value of about 14.8 points.

For panthers, we calculate their mean values by totaling all their scores.

14+10+10+10+17+3+28+13+17+32+16+10+14+7+21 = 222

222/15 scores = 14.8

For Saints,  21+12+3+3+10+10+14+3+12+28+40+10+17+20+7 = 210

210/15 score = 14

This shows that Panthers have a larger mean value. Also, Panthers have a larger median value than saints.  We find the median by arranging the scores from small to large and picking the number in between.

Find more exercises on finding mean value;

https://brainly.com/question/14693117

#SPJ1

A. (-1, A)

B. (2, infinite)

C: (-infinite, - 1)

(pls let me know if I'm wrong and if I am I'm very sorry.)

Answer:

Great, based on the provided dimensions for Object 1 (the cereal box), here are the formulas and calculations for:

Area of the entire rectangular prism:

A = lw + lh + wh

A = 128 + 121.75 + 8*1.75

A = 96 + 21 + 14 = 131 square inches

Base area:

The base of a rectangular prism is a rectangle. So the base area formula is:

Base area = Length * Width

= 12 inches * 8 inches = 96 square inches

So the formulas are:

Area (entire prism): A = lw + lh + wh

Base area: Base area = Length * Width

In this case:

Length = 12 inches

Width = 8 inches

Height = 1.75 inches

Step-by-step explanation:

The likelihood that understanding testing positive for HIV with this test is tainted with HIV is almost 0.104 or 10.4%

To illuminate this issue, we will utilize Bayes' hypothesis. Let's characterize the taking after occasions:

A: the persistent is contaminated with HIV

B: the persistent tests positive for HIV

We need to calculate P(A|B), the likelihood that an understanding is contaminated with HIV given that they tried positive for HIV.

By Bayes' hypothesis:

P(A|B) = P(B|A) * P(A) / P(B)

where

1. P(B|A) is the likelihood of testing positive for HIV given that the persistent is tainted with HIV (97%)

2. P(A) is the predominance of HIV within the clinic (8%)

3. P(B) is the likelihood of testing positive for HIV, which can be calculated utilizing the law of adding up to likelihood:

P(B) = P(B|A) * P(A) + P(B|A') * P(A')

where

1. P(B|A') is the likelihood of testing positive for HIV given that the persistent isn't tainted with HIV (4%)

2. P(A') is the complement of A, i.e., the likelihood of a quiet not being tainted with HIV (1 - 8% = 92%)

Substituting the values we have:

P(B) = 0.97 * 0.08 + 0.04 * 0.92 = 0.0736

P(B) =  0.0736

Hence,

P(A|B) = 0.97 * 0.08 / 0.0736 ≈ 0.104

P(A|B) = 0.104

So the likelihood that understanding testing positive for HIV with this test is tainted with HIV is almost 0.104 or 10.4% (adjusted to three decimal places). 

To know more about probability refer to this :

https://brainly.com/question/24756209

#SPJ4

The estimated standard error and measures of effect size such as r2 and Cohen's d larger variance increases the standard error but decreases measures of effect size. B.

Larger variance increases the standard error but decreases measures of effect size.

The standard error is a measure of how much the sample mean is likely to vary from the true population mean.

It is calculated as the standard deviation of the sample divided by the square root of the sample size.

If the sample variance is large, the standard deviation of the sample will also be large, resulting in a larger standard error.

Measures of effect size, such as r2 and Cohen's d, indicate the strength of the relationship between variables or the size of the difference between groups, respectively.

Larger sample variances indicate greater variability in the data, which can make it more difficult to detect significant effects.

This can result in smaller effect sizes, as the magnitude of the effect is reduced relative to the variability in the data.

For similar questions on variance

https://brainly.com/question/15858152

#SPJ11

A threat to internal validity occurs only if a potential design confound varies systematically with the independent variable.

In experimental research, an independent variable is a variable that the researcher manipulates or systematically varies in order to study its effect on the dependent variable. It is called "independent" because it is not influenced by any other variables in the experiment, and its effects on the dependent variable can be observed and measured independently of any other factors.

Only when a possible design confound fluctuates systematically with the independent variable does internal validity come under threat. In other words, it might be challenging to distinguish between the effects seen on the dependent variable and the independent variable if there is a component that fluctuates consistently or predictably with changes in the independent variable. Internal validity is less likely to be threatened by random or unplanned variation.

To learn more about independent variables, refer to:

https://brainly.com/question/82796

#SPJ4

A threat to internal validity occurs only if a potential design confound varies systematically with the independent variable. This means that if the confound varies randomly or haphazardly, it is less likely to affect the results of the study.

This means that the confound is consistently related to the independent variable, making it difficult to determine if the observed effects are due to the independent variable or the confound. If the confound varies spontaneously or haphazardly, it is less likely to pose a threat to internal validity, as it would not be consistently associated with the independent variable.

However, if the confound is related to the independent variable in a consistent and predictable way, it can introduce bias and undermine the internal validity of the study. It is important for researchers to carefully control for potential confounds and ensure that any observed effects are truly due to the independent variable and not some other factor.

To learn more about Independent variable: brainly.com/question/1479694

#SPJ11

So, from the given options, the scatter plot that shows a positive linear association is option B.

A scatter plot is a type of graph that displays the relationship between two variables. Each data point in the scatter plot represents a pair of values for the two variables being plotted, with one variable on the x-axis and the other on the y-axis. Scatter plots are used to examine the correlation or relationship between the variables. If the points on the scatter plot form a pattern that slopes upwards as you move from left to right, it indicates a positive linear association between the variables. If the pattern slopes downwards, it indicates a negative linear association. If there is no pattern or trend, it indicates no correlation between the variables.

Here,

A scatter plot that shows a positive linear association is one where the points on the graph form a pattern that goes upward and to the right.

In option A, the data points do not show a clear upward trend, so this scatter plot does not show a positive linear association.

In option B, there is a clear upward trend in the data points as you move from left to right, so this scatter plot does show a positive linear association.

In option C, the data points do not show a clear upward trend, so this scatter plot does not show a positive linear association.

In option D, the data points do not show a clear upward trend, so this scatter plot does not show a positive linear association.

To know more about scatter plot,

https://brainly.com/question/13984412

#SPJ1

It takes the second marathoner 4 hours and 40 minutes to complete the marathon.

Let's assume the distance of the marathon is "d" miles.

The first marathoner runs at a constant speed for 4 hours, so we can find their speed as:

speed = distance / time = d / 4

The second marathoner starts by running at 4 times the speed of the first marathoner, so their speed is:

speed = 4(d / 4) = d

For the second half of the race, the second marathoner's speed drops to 3/4 of the first marathoner's speed. Let's assume it takes "t" hours for the second marathoner to complete the second half of the race. Then, we can write:

d / 2 = (3/4)(d / 4)(t)

Simplifying this equation, we get:

t = (2/3) hours

So the total time it takes the second marathoner to finish the race is:

4 + (2/3) = 4 2/3 hours = 4 hours and 40 minutes.

To learn more about speed click on,

https://brainly.com/question/31191256

#SPJ4

the sets of parametric equation that represents (x-1)²+(y+ 4)² = 9 is:

x = 1 + 3 cosθ

y = -4 + 3 sinθ

( x -1)^2 = (r cosθ)^2

x - 1 = r cosθ

= 3 cosθ

x = 1 + 3 cosθ

y + 4 = 3 sinθ

= y = -4 + 3 sinθ

There, the sets of parametric equation that represents (x-1)²+(y+ 4)² = 9 is:

the sets of parametric equation that represents (x-1)²+(y+ 4)² = 9 is:

x = 1 + 3 cosθ

y = -4 + 3 sinθ

Learn about parametric equations here https://brainly.com/question/30451972

#SPJ1

The question is incomplete, see missing part in the attached image.