a new disease has annihilating amphibian populations at unprecedented levels. researchers has been trying to develop some treatment that can counteract the disease and save some of the amphibian populations. to test which of two potential solutions is more effective, they take a sample of frogs and randomly divide them into two groups. after being treated, 259 of the 400 frogs in group 1 ended up surviving exposure to the pathogen; 300 of the 482 frogs in the second group survived. for the following questions, calculate your difference in the order: group 1 - group 2. the standard error of the difference was 0.033.

The correct response is b. y = 197,910(1.069)^t. 197,910 people called Greensboro, North Carolina, home in 1984. Since 1984, Greensboro's population has been declining at an average rate of 6.9% per year, according to the U.S. Census Bureau.

The average rate at which one quantity changes in relation to another's change is referred to as the average rate of change function. An average rate of change function is a calculation that divides the amount of change in one item by the corresponding amount of change in another. Below are some examples of typical change rates: The typical bus speed is 80 km/h. Fish populations in lakes increase at a rate of 100 each week. For every 1 volt drop in voltage, an electrical circuit's current reduces by 0.2 amps.

The population of Greensboro t years after 1984 is y = 197,910(1.069)^t.

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Answer:

  c. 33.0%

  d. 14.5%

Step-by-step explanation:

For answering questions about percentages in different categories or combinations of categories, it is convenient to find the totals of rows and columns in the table. These totals are shown in the attached.

__

Students who surf total 32+65 = 97. Of those, 32 also skateboard. The requested percentage is ...

  32/97 × 100% ≈ 33.0% . . . . surfers who also skateboard

__

The total number of students is 166. Of those, the number who neither surf nor skateboard is 24. That percentage is ...

  24/166 × 100% ≈ 14.5% . . . . students who don't surf or skateboard

_____

Additional comment

a. 97/166 ≈ 58.4% surf

b. 89/166 ≈ 53.6% do not skateboard

__

This sort of table is called a "two-way table." One set of categories is represented in rows, another set is represented in columns. This table is filled with frequencies. Such tables can also display relative frequencies by dividing the entire table by the total of totals in the lower right corner.

Probability of receiving a hand with exactly three suits \(= (4 * (13^3)) / 2,598,960\)

What is Combinatorics?

Combinatorics is a branch of mathematics that deals with counting, arranging, and organizing objects or elements. It involves the study of combinations, permutations, and other related concepts. Combinatorics is used to solve problems related to counting the number of possible outcomes or arrangements in various scenarios, such as selecting items from a set, arranging objects in a specific order, or forming groups with specific properties. It has applications in various fields, including probability, statistics, computer science, and optimization.

To calculate the probability of receiving a hand with exactly three suits when dealt 5 cards from a well-shuffled deck of cards, we can use combinatorial principles.

There are a total of 4 suits in a standard deck of cards: hearts, diamonds, clubs, and spades. We need to calculate the probability of having exactly three of these suits in a 5-card hand.

First, let's calculate the number of favorable outcomes, which is the number of ways to choose 3 out of 4 suits and then select one card from each of these suits.

Number of ways to choose 3 suits out of 4: C(4, 3) = 4

Number of ways to choose 1 card from each of the 3 suits\(: C(13, 1) * C(13, 1) * C(13, 1) = 13^3\)

Therefore, the number of favorable outcomes is \(4 * (13^3).\)

Next, let's calculate the number of possible outcomes, which is the total number of 5-card hands that can be dealt from the deck of 52 cards:

Number of possible outcomes: C(52, 5) = 52! / (5! * (52-5)!) = 2,598,960

Finally, we can calculate the probability by dividing the number of favorable outcomes by the number of possible outcomes:

Probability of receiving a hand with exactly three suits =\((4 * (13^3)) / 2,598,960\)

This value can be simplified and expressed as a decimal or a percentage depending on the desired format.

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Answer:

76 77 77 77 77 77 77

second row

Step-by-step explanation:

Answer:

5256 next time use calculator

Step-by-step explanation:

Mrs. Wright give here explanation against her husband's death that somebody strangled him

The term trifles is a one-act play written by Susan Glaspell

And in that play they represents the two women discuss the life of a woman accused of murdering her husband, here we have also know that while the sheriff and county attorney investigate the scene.

Here we have to know that In Trifles the character names as Mrs. Wright explains her husband's death by saying he died "of a rope around his neck."

And here she also claims that someone strangled him and she also explains her situation in order to explain his demise.

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Answer:I think the answer is B

Step-by-step explanation:

Answer:

This is actually really confusing cause there is to options its either B or C

Step-by-step explanation:

a. If 1,200 students are in the district, 165 students can be expected to oppose school uniforms.

b. From the sample, the most likely outcome is in favor, as it got the most responses, hence we should disagree with Bernice.

A proportion is a fraction of the total amount.

Out of 80, 11 opposed, hence, out of 1200, we apply the proportion and find that the amount will be of:

1200 x 11/80 = 165.

Hence, a - 165 students can be expected to oppose school uniforms.

b - We should disagree with Bernice because the sample indicates that the outcome in favor is the most likely because it received the most answers.

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The value of y is ± (3√6/2) when x =2

To find the value of y when x = 2, we can use the given differential equation and initial condition.

Given: dy/dx = (x³ + 1)/y

Let's solve the differential equation using the separation of variables:

Separating the variables, we have:

y dy = (x³ + 1) dx

Integrating both sides, we get:

∫ y dy = ∫ (x³ + 1) dx

Integrating the left side:

(1/2) y² = (1/4) x⁴ + x + C

Now, using the initial condition y = 2 when x = 1, we can solve for C:

(1/2) (2²) = (1/4) (1)⁴ + 1 + C

2 = 1/4 + 1 + C

2 = 5/4 + C

C = 2 - 5/4

C = 3/4

Substituting the value of C back into the equation:

(1/2) y² = (1/4) x⁴ + x + 3/4

Multiplying both sides by 2 to eliminate the fraction:

y² = (1/2) x⁴ + 2x + 3/2

Now, we can substitute x = 2 into the equation to find y:

y² = (1/2) (2)⁴ + 2(2) + 3/2

y² = 8 + 4 + 3/2

y² = 27/2

y = ± (3√6/2)

Therefore, The value of y is ± (3√6/2) when x =2

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Answer:

V = 63.62

Step-by-step explanation:

Answer: 63.62 cubic inches

Step-by-step explanation:

REMEMBER :: VOLUME OF CYLINDER = πr^2h

r= 1.5 in.

h= 9 in.

V= π (1.5)^2 (9)

V= π (2.25) (9)

V= π (20.25)

V~63.6172512...

nearest hundredth = 63.62 cubic inches

The translation of the mathematical statement given as six decreased by 9 times a number is -39 is 9x - 6 = -39

The mathematical statement is given as:

six decreased by 9 times a number is -39

9 times a number means

9 * x (assume x is the number)

So, we have:

six decreased by 9 times a number is -39 ⇒ six decreased by 9x is -39

Decreased by means we subtract 6 from 9x.

So, we have:

six decreased by 9 times a number is -39 ⇒ 9x - 6 = -39

Hence, the translation of the mathematical statement given as six decreased by 9 times a number is -39 is 9x - 6 = -39

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Answer:

linear

Step-by-step explanation:

y = mx + b is equation for linear functions

The height of the other tree is 7.25 meters

From the question, we have the following parameters that can be used in our computation:

Using the above as a guide, we have the following:

Ratio = Height : Shadow

So, we have

Height : Shadow = 4 : 16

Simplify

Height : Shadow = 1 : 4

So, we have

Height : 29 = 1 : 4

This means that

Height = 29 * 1/4

Evaluate

Height = 7.25

Hence the height is 7.25 meters

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Answer:

The height of the other tree is 7.25 meters

Step-by-step explanation:

Number 5

So for the difference of perfect squares factor with the numbers on both factors having to be the same, but one adds and one subtracts.

Answer:

EF=BC (by CPCT) if both Triangle are ~

Answer:

$355

Step-by-step explanation:

if each pear is 60c and apples are 5c less...

60×5=300

300+55=355

because 60-5=55

Solution:

Concept:

To solve the length of the hypotenuse, we will use the Pythagoras theorem below

By substituting the values, we will have

Hence,

The length of hypotenuse C , is

Answer:

\((a)\ Total = 75\)

\((b)\ Students = 100\)

Step-by-step explanation:

Given

See attachment for complete question

Solving (a); Number of students represented.

To do this, we simply calculate the length of each bar and then sum them up.

So, we have:

\(Jan = 16\)

\(Feb = 10\)

\(Mar = 18\)

\(Apr = 15\)

\(May = 5\)

\(Jun = 11\)

So, the total is;

\(Total = Jan + Feb + Mar + Apr + May + Jun\)

\(Total = 16 + 10 + 18 + 15 + 5 +11\)

\(Total = 75\)

Solving (b): Prediction of February students out of a total of 750.

To do this, we use:

\(Students = \frac{Month}{Total} * 750\)

For February, we have:

\(Students = \frac{Feb}{Total} * 750\)

\(Students = \frac{10}{75} * 750\)

\(Students = \frac{10 * 750}{75}\)

\(Students = \frac{7500}{75}\)

\(Students = 100\)

Answer:

this answer is incorrect

Answer:

Count up the side so for 10 count the Arrow going up for the 5 count to the side  but like for example.

Go up 10 and move left 5 times?

Does this help

Step-by-step explanation:

True. Nonsampling errors refer to errors that occur during the data collection process that are not related to the sampling method used. These errors can occur in any type of data collection method, whether it be through surveys, experiments, or observational studies.

Nonsampling errors can arise due to a variety of reasons, such as poor survey design, biased sampling methods, inadequate training of surveyors, errors in data entry or processing, or even deliberate fraud.

Nonsampling errors can have a significant impact on the quality of the data collected, as they can introduce biases and inaccuracies into the results. These errors can result in incorrect conclusions and decisions based on the data, which can have serious consequences. Therefore, it is important to take steps to minimize nonsampling errors during the data collection process, such as carefully designing surveys, ensuring proper training of surveyors, and conducting thorough quality checks on the data collected.

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Answer:

a=9/100   b= 7/20

Step-by-step explanation:

For a all you do is take the 9 out of the 100 in 1.

For b, all you do is take the 35/100, and then simplify it, so in this case it is 7/10 if you divide both the numerator and denominator by 5.

So a = 9/100 and b = 7/20

Answer:

≈ 22 cm

Step-by-step explanation:

the circumference (C) of a circle ( the perimeter ) is calculated as

C = 2πr ( r is the radius )

   = 2π × 7 = 14π

since divided into 2 equal parts then

\(\frac{1}{2}\) C = 14π ÷ 2 = 7π ≈ 22 cm ( to the nearest whole number )

The value of a/b is  \(\sqrt{6}\) / 2

The area of mathematics known as mensuration is concerned with measuring geometric shapes and their various characteristics, such as length, volume, shape, surface area, lateral surface area, etc. In fundamental mathematics, learn about mensuration.

Measurement of agricultural fields, floor areas required for purchase/selling transactions. Measurement of volumes required for packaging milk, liquids, solid edible food items. Measurements of surface areas required for estimation of painting houses, buildings, etc.

According to the question:-

Side of an equilateral triangle equals a/3.

Therefore, the equilateral triangle's area is equal to (1/2)(a/3)2 sqrt (3) / 2 = a2 [sqrt (3)/ 36].

Hexagonal side equals b / 6.

The area is thus 6 (1/2) (b/6)^2 sqrt (3) / 2 

= b^2 [ 3 sqrt (3) / 72] = b^2 [sqrt (3) / 24]

So

sqrt (3) / 36 a2 = sqrt (3) / 24 b2

So

A2 / B2 = [Sqrt(3)/24] / [Sqrt(3)/36]

a^2 / b^2 = [ 36 / 24 ]

a^2/ b^2 = 3/2

A/ B = Sqrt(3) / Sqrt(2)

=Sqrt(6) / 2

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Answer:

88 people bought two fruit=.70
86 people bought three fruits=1.60
1 person bought an apple=1.35
1 person bought a pear=1.45
Step-by-step explanation:

1.60 x 86=137.6
88 x .7=61.6
61.6 + 137.6=199.2
1.35 + 1.45=2.8
199.2 + 2.8=202

The measure of the angle m∠ABD is 100°.

What is the measure of angle?

In mathematics, an angle is defined as the amount of rotation between two lines or planes that share a common point. The measure of an angle is typically given in degrees or radians. A full rotation is equal to 360 degrees or 2π radians, and the size of an angle can range from 0 degrees (no rotation) to 360 degrees (a full rotation).

In the given figure, m∠ABC = 130° and m∠DBC = 30° is given.

And we have to find the m∠ABD

so

m∠ABC = m∠ABD + m∠DBC

130° = m∠ABD +  30°

m∠ABD =  130° -  30°

m∠ABD = 100°

Hence, the measure of the angle m∠ABD is 100°.

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Answer:

c

Step-by-step explanation:

Answer:

The law of syllogism applies to this scenario because the law of syllogism states that if a=b and b=c, then a=c. A is playing baseball. B is playing a sport. C is being an athlete.

Step-by-step explanation:

Domain of function =  {-3 , -4}

Range of function =  {4 , -1 , -4}

The domain of a function is the set of values that we are allowed to plug into our function. This set is the x values in a function such as f(x). The range of a function is the set of values that the function assumes. This set is the values that the function shoots out after we plug an x value in.

Given,

points on graph of a function are

(-3 , 4) , (-3 , -1) , (-4 , -4)

Range is set of y-values,

Range = {4 , -1 , -4}

Domain is set of x - values

Domain = {-3 , -4}

Hence, Domain and range of function are {-3 , -4} and {4 , -1, -4} respectively.

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Answer:

x = 5

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Distributive Property

Equality Properties

Step-by-step explanation:

Step 1: Define

3(14 + x) = 57

Step 2: Solve for x

Answer:

x=5

Step-by-step explanation:

First multiply 3(14+x) = 42 + 3x

Now you have the equation 42 + 3x =57

Then subtract 42 from both sides

The equation would be 3x = 15

Divide 3 from each side to get the x value

15/3=5

So therefore your answer would be x = 5

Hope this helps!

Answer:

1

Step-by-step explanation:

The coefficient is the number in front of a variable. There is a hidden coefficient of 1 in front of z. The reason it is not shown is because any number multiplied by 1 is just that number so showing the 1 is redundant.

The coefficient  of z in the expression 3x- 4y +z is 1.

A mathematical operation such as subtraction, addition, multiplication, or division is used to combine terms into an expression. In a mathematical expression, the following terms are used:

Given:

3x - 4y + z

As, we know a coefficient is a number that is multiplied by a variable.

So, the coefficient of x is 3, coefficient of y is 4 and coefficient  of z is 1.

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