3^2-(4/5/8)+1

please expert verfied asap i will give brainliest to who answer ffirst

The population size of the bacteria strain after 3 hours of growth, starting from an initial population size of 20, is 20,000.

Exponential growth is a particular form of growth pattern in which a quantity's rate of expansion is proportionate to its present size. Several natural and man-made processes, including population expansion, compound interest, and the spread of contagious illnesses, exhibit exponential growth. Rapid and accelerating growth, in which the amount grows over time at an ever-increasingly quicker pace, are the hallmarks of exponential growth.

The exponential growth function is given as:

Nn = N0 * rⁿ

Nn is the population size at time n,

N0 is the initial population size,

r is the growth factor, and

n is the time interval.

Substituting the values we have:

N3 = 20 * 10³

N3 = 20,000

Hence, the population size of the bacteria strain after 3 hours of growth, starting from an initial population size of 20, is 20,000.

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Answer:

10

Step-by-step explanation:

Given [tex]3(a^{2} +5ab) -5a^{2} -12ab[/tex]

Substitute the values:

[tex]3((2)^{2} +5 * 2 * 3) - 5 (2)^{2} - 12(2)(3)[/tex]

3(4+30) - 5(4) - 12x6
3(34) - 20 - 72
102 - 92
= 10

The simplified form of the expression x⁻²y(x³y⁵)³ is x⁷y¹⁶ for all values of x and y where the expression is defined.

To simplify this expression, we need to use the rules of exponents, specifically the rule for raising a power to a power, which states that (aᵇ)ˣ = aᵇˣ.

Using this rule, we can simplify the expression as follows:

x⁻²y(x³y⁵)³

Open bracket

= x⁻²y(x³ˣ³y⁵ˣ³) (apply the rule for raising a power to a power)

Evaluate

= x⁻²y(x⁹y¹⁵)

Apply the law of indices in multiplying again

x⁷y¹⁶

Hence, the solution is x⁷y¹⁶

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We can say with 95% confidence that the true average number of bottles per plot in Spain’s San Martin wine-producing region is between 400 and 800 bottles.

Calculated by adding up all the numbers and dividing the result by the total number of figures supplied, the average is the middle value of the provided data set. A lot of data can be displayed using the average value, which is a numerical value.

For a confidence interval around the population mean, we can use the following formula:

CI = x + z*(σ/√n)

Where: x=600 bottles, sample mean

Standard deviation for the population (unknown)

25 is the sample size, while 1.96 is the critical number for a 95% confidence interval (from the standard normal distribution table)

We apply the formula: to determine the margin of error.

ME = z*(σ/√n)

With the sample standard deviation (s) and the following formula, we can find the population standard deviation ():

s = σ/√n

σ = s*√n

= 100*25 is 500 bottles.

When we enter all values into the calculation for the confidence interval, we obtain:

CI = 600 + 1.96*(500/√25)

CI = 600 + 1.96*100

CI = (400, 800) (400, 800)

The true average number of bottles per plot in Spain's San Martin wine-producing region is therefore between 400 and 800 bottles, and we can assert this with 95% confidence.

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The complete question is

According to an article in Travel & Leisure, an average plot of land in Spain’s San Martin wine-producing region yields 600 bottles of wine each year.10 Assume this average is based on a random sample of 25 plots and that the sample standard deviation is 100 bottles. Give a 95% confidence interval for the population average number of bottles per plot.

The equation of the ravine time function is a quadratic equation, the time, t that will take for the music player to fall to the bottom of the ravine is equals to the 1.5 seconds.

We have the construction workers likes to listen to music on the job. The time it takes for the music player to fall from the bridge to the bottom of the ravine can be modeled by the following

equation, t = √(8t+24)/16 --(1)

where t--> the amount of time since the construction worker dropped his music player. Now, we have to solve equation (1). Squaring both sides in equation (1)

=> t² = (√(8t + 24)/16)

=> t² = [((8t + 24)/16)½]²

=> t² = ( 8t + 24)/16

Cross multiplication

=> 16t² = 8t + 24

=> 16t² - 8t - 24 = 0 --(2)

which is a quadratic equation with variable 't'. To solve the quadratic equation or value of t, we use "quadratic formula". The quadratic equation formula to solve the equation ax² + bx + c = 0 is x = [-b ± √(b² - 4ac)]/2a. Here we obtain the two values of x. Now, comparing the equation (2) with

second order equation, ax² + bx + c = 0, we get a = 16 , b = -8 , c = -24

So, t = [-b ± √(b² - 4ac)]/2a

=> t = [ -(-8) ± √((-8)² - 4×16×(-24))]/2×16

=> t = [8 ± √64 + 1536 ]/32

=> t = ( 8 ± √1600)/32

=> t = (8 ± 40)/32

either t = (8 + 40)/32 or t = (8 - 40)/32

either t = 48/32 or t = -32/32 = -1

either t = 3/2 = 1.5 or t = -1

but time, t cannot be equal to negative value. So, the required time value, t is 1.5 seconds.

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Complete question:

One of the construction workers likes to listen to music on the job. Unfortunately, he also has a bad habit of accidentally dropping his music player into the ravine! Luckily, his daughter is good with physics and has built a safety balloon for his latest music player that will release after the music player has been falling for 1 second.

The time it takes for the music player to fall from the bridge to the bottom of the ravine can be modeled by the following equation,t = √(8t+24)/16

where tis the amount of time since the construction worker dropped his music player. First, how long will it take for the music player to fall to the bottom of the ravine?

Solve the equation and find the values of t. (2 points: 1 point for each value)

The probability of obtaining sufficient participants for their study is 0.0029.

The probability of researchers at a firm finding enough subjects for their study can be calculated using binomial probability.

Binomial probability is a probability distribution that calculates the probability of one event's occurrence in a specified number of experiments or trials that produce either positive or negative outcomes.

The probability that an event will occur in n number of trials or experiments is determined using the following formula:

P(X=a) = ⁿCₐ * p^a * (1-p)^(n-a)

Where ⁿCₐ is the number of combinations of "n" items taken "a" at a time.

"p" is the probability of an event occurring.

"(1-p)" is the probability of an event not occurring.

"n" is the number of experiments, and "a" is the number of successful events.

Let us solve the problem now. We have n = 729 and p = 0.04

We need to find out the probability of finding 19 children with the gene for their study. This means that we need to find out P(X=19)Now, we can calculate it as:

P(X=19) = ⁿCₐ * p^a * (1-p)^(n-a)

Putting the given values, we get:

P(X=19) = ⁷²⁹C₁₉ * (0.04)^19 * (1 - 0.04)^(729 - 19)

≈ 0.0029

Hence, the probability of finding enough subjects for their study is 0.0029.

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Using the diagram of the circle given above, the value of the parts of the circle is as follows:

1.) Minor arc = Arc AB

2.) Major arc = Arc ACB

3.) Semicircle = AC

4.) Two central angles = 40° and 320°

5.) Arc AB = < 180°

6.) Arc ACB = > 180°

The minor arc of a circle is defined as part of the circle that is less than 180° that connects two points on the circumference of a circle.

The major arc of a circle is defined as the part of the circle that is greater than 180° that connects two points on the circle of a circle.

A semi circle is defined as exactly half of a circle which has a total of 180°.

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The student made an error when factoring because they did not factor the expression correctly. The correct factoring of the expression is 6x^2 - x - 12 = 6x(x - 2) - 3(4).

A common factor in math is a number that can be divided into two or more numbers without a remainder. For example, the common factors of 10 and 15 are 1, 5, and 10. The greatest common factor (GCF) is the largest number that divides both numbers evenly. In this example, the GCF of 10 and 15 is 5. Common factors are useful for simplifying fractions, solving equations, and finding the lowest common multiple.

When factoring by grouping, it is important to remember that the factors of the first and last terms of the expression must multiply to equal the middle terms. In this example, the first and last terms are 6x^2 and -12 respectively. These numbers do not multiply to equal -x, which is the middle term.

The student should have factored the expression by dividing the first and last terms by the greatest common factor (GCF). The GCF of 6x^2 and -12 is 6x, so the expression can be factored as 6x(x - 2) - 3(4).

When factoring by grouping, it is also important to remember to factor out the common factor first. In this example, the common factor is 3x, so the expression should be factored as 3x(2x - 3) - 4(2 - 3).

In conclusion, the student made an error when factoring the expression because they did not factor the expression correctly. The proper way to factor the expression is to divide the first and last terms by the greatest common factor and factor out the common factor first.

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The missing lengths of x of the given similar figures are:

9) x = 18

10) x = 5

Similar polygons are polygons that have the same shape, but their sizes may vary. Thus, if two polygons are similar, then their corresponding angles are congruent and corresponding sides are in equal proportion.

9) From the concept of similar triangles, their ratios of similar sides are equal and as such we have:

x/6 = 6/2

x = 6 * 3

x = 18

10)  From the concept of similar triangles, their ratios of similar sides are equal and as such we have:

21/7 = 15/x

3x = 15

x = 5

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The equation that could be used to find the value of "m" is: m = 20

To find the equation to determine the number of muffins Sylvie has left after baking and giving away some, we need to follow these steps:

Calculate the total number of muffins baked by Sylvie: 4 trays x 8 muffins/tray = 32 muffins

Subtract the number of muffins given away from the total baked: 32 muffins - 12 muffins = 20 muffins

Assign the number of muffins left to the variable "m"

Therefore, the equation that could be used to find the value of "m" is:

m = 20

This means that Sylvie has 20 muffins left after giving away 12 to her friends. It's important to note that we used basic arithmetic operations to solve this problem, including multiplication and subtraction, and then assigned the remaining value to a variable to create the equation.

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The slope of the line would be 0.4.

For every 5-unit change in x, the change in y is 2 units.

The slope of a line is a measure of how steeply it rises or falls. It is the ratio of the change in the vertical direction (y) to the change in the horizontal direction (x) between any two points on the line.

The slope of a line can be found by the formula :

= ( Y2 - Y1 ) / ( X 2 - X1)

= ( 2 - 0 ) / ( 5 - 0 )

= 2 / 5

= 0. 4

This is for every 1 unit change in x. For a 5 unit change in x, the change in y is:

= 0. 4 x 5

= 2 units

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The equation is y = 27(1/3)^x and the type  is a decay function

From the graph, we have the following sequence that can be used in our computation:

27, 9, 3....

The above definitions imply that we simply multiply 1/3 to the previous term to get the current term

This means that the function reduces

So, it is a decay function

For the equation, we have

y = ab^x

Where

a = y when x = 0

So, we have

y = 27(b)^x

Using the point, we have

27(b)^1 = 9

So, we have

b = 1/3

So, the equation is y = 27(1/3)^x

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The radius of cone A is √(2/π) and the radius of cone B is √(4.5/π).

The surface area of a cone is given by

[tex]A=\pi r^2 + \pi rL[/tex]

, where r is the radius and L is the slant height.

In the case of cone A, we have A = 2m2 and in the case of cone B,

we have A = 4.5m2.

Using the equation above, we can solve for the radius of cone A and cone B.

For cone A: [tex]2 = \pi r^2 + \pi rL[/tex],

so r = √(2/π)

For cone B: [tex]4.5 = \pi r^2 + \pi rL[/tex],

so r = √(4.5/π)

Therefore, the radius of cone A is √(2/π) and the radius of cone B is √(4.5/π).

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The option D is the correct answer: the smaller the standard error, the larger the sample size.

Answer:Option D: The smaller the standard errorExplanation:Estimation in statistics is the process of using data from a sample to make inferences about the characteristics of a population. In general, the larger the sample size, the more reliable the estimate of the population parameter will be. The smaller the standard error, the more precise the estimate is likely to be. The standard error is the standard deviation of the sampling distribution of the sample mean, and it measures the variability of the sample means that are computed from the different samples that could be drawn from the population.The standard error of the mean is an estimate of the standard deviation of the sampling distribution of the mean. It is a measure of how much the sample mean is likely to vary from the true population mean. The standard error is given by the formula σ / sqrt(n), where σ is the population standard deviation and n is the sample size. As the sample size increases, the denominator of this formula increases, which means that the standard error decreases. Therefore, option D is the correct answer: the smaller the standard error, the larger the sample size.

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Answer:

(14x + y)(14x - y)

Step-by-step explanation:

The solution to the equation 8x - 2 - 5x + 7 = 0 is x = 15/3. This equation can be solved by using the distributive property and combining like terms.

Distributive Property is a mathematical property that allows the distribution of a multiplication operation over an addition or subtraction operation. It states that the multiplication of a sum by a number is equal to the sum of each addend multiplied by that number. This property is used to simplify equations and break down complex problems into easier ones. It can be expressed as a(b + c) = ab + ac.

8x - 2 - 5x + 7 = 0

This equation can be solved by using the distributive property and combining like terms. The distributive property states that when we multiply a number by a sum or difference of two or more numbers, we can distribute the number to each individual number and then add or subtract the results.

In this equation, we can apply the distributive property to the left side of the equation by multiplying the 8x and -5x terms by the sum of -2 and 7. This gives us the equation 8x(-2 + 7) - 5x(2 + 7) = 0.

After distributing the terms, we can then combine like terms by adding the 8x and -5x terms together. This gives us the equation 3x(-2 + 7) = 0.

Finally, we can solve for x by setting the coefficient of x equal to zero. Therefore, 3(-2 + 7) = 0, or -6 + 21 = 0. Rearranging the equation gives us x = 15/3.

Therefore, the solution to the equation 8x - 2 - 5x + 7 = 0 is x = 15/3.

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The amount of money that in the interest will the bank put Henry's account is $1000

If Henry keeps at least $5,000 in his savings account, the bank will put a 20% interest on it annually.

To find out how much interest Henry will earn, we can use the formula:

Interest = Principal x Rate

Where the,

Principal is the amount of money , Henry keeps in his savings account, which is $5,000 or more.

Rate is the interest rate, which is 20% or 0.20 in decimal form.

So, the interest Henry will earn is:

Interest = $5,000 x 0.20

Interest = $1,000

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Yοu dο nοt need mοre tickets fοr the prize, as yοu already have mοre than enοugh.

If yοu have 125% οf the tickets required fοr a prize, it means yοu have mοre than the number οf tickets required.

Tο find the fractiοn οf the required tickets that yοu have, yοu can cοnvert 125% tο a fractiοn and simplify 125% = 125/100 = 5/4

Sο, yοu have 5/4 οf the required tickets. Tο find the fractiοn οf the required tickets that yοu have, yοu need tο divide the number οf tickets yοu have by the number οf tickets required:

fractiοn οf required tickets = (number οf tickets yοu have) / (number οf tickets required)

Let's say the number οf tickets required is x. Then, the number οf tickets yοu have is 1.25 times x, οr 5/4 times x:

(number οf tickets yοu have) = 5/4 * x

Sο, the fractiοn οf required tickets that yοu have is:

fractiοn οf required tickets = (5/4 * x) / x = 5/4

This means yοu have 5/4, οr 1.25 times, the required number οf tickets. Therefοre, yοu dο nοt need mοre tickets fοr the prize, as yοu already have mοre than enοugh.

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The volume of a right circular cone that has a height of 3.5 ft and a radius of 18.9 ft is given as follows:

1308.6 ft³.

The volume of a cone of radius r and height h is given by the equation presented as follows, which the square of the radius is multiplied by π and the height, and then divided by 3.

V = πr²h/3.

The parameters for the cone in this problem are given as follows:

Hence the volume of the cone is given as follows:

V = 3.14 x 18.9² x 3.5/3

V = 1308.6 ft³.

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Answer:    

18 large shirts

2 small shirts

Step-by-step explanation:

trial and error my boi

Answer: (f+g)(x) = 3x^2-4

After answering the provided question, we can conclude that As a result, the triangles are similar according to the AA and SAS similarity criteria.

A triangle is a closed, double-symmetrical object that consists of three line segments called ends of the spectrum that intersect at three points called vertices. Triangles can be distinguished by their sides and angles. Triangles can be equilateral (equal factions), isosceles, or scalene based on their sides. Triangles are classified as acute (all angles less than 90 degrees), okay (one angle equal to 90 degrees), or orbicular (all angles greater than 90 degrees) (all angles greater than 90 degrees). The region of a triangle can be calculated using the formula A = (1/2)bh, where an is the neighbourhood, b is the triangle's base, and h is its height.

a. Here is a similarity statement that shows which triangles are similar:

Triangle ABC is the same as triangle DEF.

b. The triangles are similar in that they both have:

Angle-Angle (AA) similarity: Both triangles have two congruent corresponding angles, namely angle A and angle D and angle C and angle F.

Side-Angle-Side (SAS) similarity: The triangles have a pair of proportional length corresponding sides, AB and DE, and another pair of proportional length corresponding sides, BC and EF.

As a result, the triangles are similar according to the AA and SAS similarity criteria.

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Answer:

$62.00

Step-by-step explanation:

7% of 50 is 3.5. 17% of 50 is 8.5. 8.5+3.5 is 12. 50+12= 62.

The total resistance for the current is 432900 ohms.

The obstruction to current flow in an electrical circuit is measured by resistance. The Greek letter omega () represents the unit of measurement for resistance, known as ohms. Georg Simon Ohm (1784–1854), a German scientist who investigated the connection between voltage, current, and resistance, is the name given to the unit of resistance. Ohm's Law is attributed to him as its creator.

The power in parallel connection is calculated as:

Peq = P1 + P2 / (P1)(P2)

Peq = 250 + 150 / (250)(150)

For P3 and P4:

Peq2 = P3 + P4 / (P3)(P4)

Peq2 = 250 + 150 / (250)(150)

Now, the two are in series thus,

P = 250 + 150 / (250)(150) + 250 + 150 / (250)(150)

P = 2(250 + 150 / (250)(150))

P = 0.0213

The power formula is given as:

P = V(V) / R

0.0231 = (100)(100)/R

R = 432900 ohms.

Hence, the total resistance for the current is 432900 ohms.

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Answer:

1 7/8

Step-by-step explanation:

Sorry if this is wrong <3

If a relationship between two variables is considered statistically significant, it indicates that the variables are related in the population represented by the sample.

The order of the ARIMA process:a. ARIMA(2, 1, 3) has an order of 6b. ARIMA(2, 0, 3) has an order of 5c. ARIMA(3, 0, 2) has an order of 5d. ARIMA(3, 1, 2) has an order of 6e. ARIMA (3,3,0) has an order of 3Therefore, the order of the ARIMA process for each of the given values is: ARIMA(2,1,3) is 6, ARIMA(2,0,3) is 5, ARIMA(3,0,2) is 5, ARIMA(3,1,2) is 6, and ARIMA (3,3,0) is 3.2. If a relationship between two variables is called statistically significant, it means the investigators think the variables are related in the population represented by the sample.The correct option is d. related in the population represented by the sample.Statistical significance indicates that there is a very low probability that a pattern in the data appeared by chance, rather than a real relationship between the variables. Therefore, if a relationship between two variables is considered statistically significant, it indicates that the variables are related in the population represented by the sample.

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Thus, the equation of the line parallel to line p that passes through (2, 5) is y = mx - 2m + 5, where m is the slope of line p.

An equation is a mathematical statement that shows that two expressions are equal. It contains one or more variables, and the goal is to solve for the value(s) of the variable(s) that make the equation true.

For example, the equation 2x + 5 = 11.

Given by the question.

To find the equation of a line parallel to line p that passes through the point (2, 5), we need to know the equation of line p.

Assuming that we have the equation of line p in slope-intercept form, y = mx + b, where m is the slope and b is the y-intercept, we can use the fact that parallel lines have the same slope to find the equation of the desired line.

Therefore, the equation of the line parallel to line p that passes through (2, 5) is:

y = mx + b (equation of line p)

y - 5 = m (x - 2) (point-slope form with (2, 5))

y = m (x - 2) + 5 (slope-intercept form)

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The wedding ring contains a total of 18 oz (3.32 oz nickel and 14.68 oz gold) and the weight of nickel in the ring is 3.32 oz.

To solve this problem, we need to first find the total weight of the wedding ring. We know that the ratio of nickel to gold in the ring is 3:13, which means that the total ratio of nickel and gold in the ring is 3 + 13 = 16.

Since we are given that the ring contains 4.16 oz of gold, we can use this information to find the total weight of the ring. To do this, we can use a proportion:

Gold weight / Total weight = Gold ratio / Total ratio

Plugging in the values we know, we get:

4.16 / Total weight = 13 / 16

Simplifying this equation, we can cross-multiply to get:

13(Total weight) = 4.16 * 16

Solving for Total weight, we get:

Total weight = 3.32 oz of nickel and 14.68 oz of gold.

Now we can find the weight of nickel in the ring by subtracting the weight of gold from the total weight:

Weight of nickel = Total weight - Weight of gold

Weight of nickel = 3.32 - 0

Weight of nickel = 3.32 oz

Therefore, the ring contains 3.32 oz of nickel.

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The third quadrant of the unit circle is the region of the circle that lies between 180 degrees and 270 degrees

The unit circle is a circle with a radius of 1 centered at the origin of the coordinate plane.

In the coordinate plane, the third quadrant is the quadrant that lies below the x-axis and to the left of the y-axis.

To find what is in the third quadrant of the unit circle, we need to look for the points on the circle that have negative x-coordinates and negative y-coordinates.

Since the radius of the unit circle is 1, we know that any point on the circle can be represented in terms of sine and cosine. Specifically, for any point (x, y) on the circle, we have:

x = cos(θ)

y = sin(θ)

where θ is the angle between the positive x-axis and the line connecting the origin and the point (x, y).

In the third quadrant, both the x-coordinate and the y-coordinate are negative. Therefore, we need to find the angle θ such that cos(θ) is negative and sin(θ) is negative.

We know that cos(θ) is negative in the second and third quadrants, and sin(θ) is negative in the third and fourth quadrants. Therefore, the third quadrant of the unit circle contains the points where:

cos(θ) is negative (i.e., θ is between 90 and 270 degrees or π/2 and 3π/2 radians), and

sin(θ) is negative (i.e., θ is between 180 and 360 degrees or π and 2π radians).

So the third quadrant of the unit circle contains all the points where:

-1 ≤ x ≤ 0 (cosine is negative in this quadrant), and

-1 ≤ y ≤ 0 (sine is also negative in this quadrant).

In other words, the third quadrant of the unit circle is the region of the circle that lies between 180 degrees and 270 degrees (or π and 3π/2 radians) and has both x and y values that are negative.

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In prοbability fοr rejecting H0 we have a) insufficient evidence.

Prοbability is a way οf calculating hοw likely sοmething is tο happen. It is difficult tο prοvide a cοmplete predictiοn fοr many events. Using it, we can οnly fοrecast the prοbability, οr likelihοοd, οf an event οccurring. The prοbability might be between 0 and 1, where 0 denοtes an impοssibility and 1 denοtes a certainty.

Accοrding tο simulatiοn, the prοbability οf having 13 male puppies οr mοre is

the frequency οf 13 male puppies οr mοre/tοtal frequency=3/1000=0.003

Our οbserved οutcοme is 13/15=0.866

Let p be the pοpulatiοn prοpοrtiοn οf males viz 0.5. The cοrrect null and alternate hypοthesis fοr abοve test

[tex]\\H_0:p=0.5\\ H_1:p > 0.5[/tex]

We are testing if the proportion of males in οur sample is greater than 0.5.

The test statistic z is

[tex]z=\frac{\hat{p-p_0}}{\sqrt{\frac{p_0(1-P_0)}{n}}}[/tex]

Where P0 is the null hypοthesized proportion i.e. when H0:P=P0

[tex]P_0=0.5\ and\ \hat{p}=13/15=0.8667[/tex]

n= 1 because we choοse only 1 pair of dogs.

[tex]z=\frac{\hat{p-p_0}}{\sqrt{\frac{p_0(1-P_0)}{n}}}[/tex]

[tex]\\z=\frac{0.8667-0.5}{\sqrt{\frac{0.5*0.5}{1}}}[/tex]

z=0.7334

P-value= P(Z>0.7334)=0.232

We wοuld have to reject H0 if P-value<0.01 or Z>2.32

But that's nοt the case, So we don't reject the null hypothesis.

We conclude abοut H0 that there is not sufficient evidence to support the claim that proportion of males is greater than 0.5. We fail tο reject the null hypοthesis.

To learn more about probability refer the below link

https://brainly.com/question/13604758

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