pls no 21 - 23 show all workings. I will mark you brainliest if you show all workings​

Answer:

  (c)  the converse of the original conditional statement

Step-by-step explanation:

If a conditional statement is described by p→q, you want to know what is represented by q→p.

For the conditional p→q, the variations are ...

As you can see from this list, ...

  the converse of the original conditional statement is represented by q→p, matching choice C.

__

Additional comment

If the conditional statement is true, the contrapositive is always true. The inverse and converse may or may not be true.

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not rlly surw if you are supposed to be putting dots there but if you are, I would put one a little bit before the first line for the 82.4 and one in the middle of the 600 and the line in the middle

The z-score is the number of standard deviations while the data value is away from the mean.

The Z-score is said to be a kind of numerical measurement that is known to show or depicts the value's relationship one has to the mean of a group of values.

WE have given a mean: 4.9 median: 6 mode: 6 variance: 4

The Z-score is often measured usually in terms of standard deviations that arise from the mean. It means that if a Z-score is 0, it shows that the data point's score is the same as the mean value.

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Answer:

standard deviations, mean.

Step-by-step explanation:

EDGE2022

The final term  after following the steps is  ( 42 + 6x ).

We are provided with some steps that we have to follow to reach the final answer or expression. The steps we have to follow to reach the final answer or expression are mentioned below;

Step 1: Add 7 to x

In the first steps we need to add 7 to the x. Mathematically this can be written as,

7 + x

Step 2: Multiply by 6

In the second step we need to multiply the entire term obtained in step 1 by 6 .  Mathematically this can be written as,

( 7 + x ) × 6

= 42 + 6x

Thus, the final term is  ( 42 + 6x ).

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Step-by-step explanation:

\(\bf 3\sqrt{8} -\sqrt{50} +2\sqrt{18} =\)

\(\bf 3\sqrt{2^{3}} -\sqrt{2\cdot5^{2}} +2\sqrt{2\cdot3^{2}} =\)

\(\bf 3\cdot 2\sqrt{2} -5\sqrt{2} +2\cdot3\sqrt{2} =\)

\(\bf 6\sqrt{2} -5\sqrt{2} +6\sqrt{2} =\)

\(\bf 12\sqrt{2} -5\sqrt{2} =\green{\underline{~7\sqrt{2}~}}\)

__________________

\(\bf \sqrt{12} -\sqrt{27} +2\sqrt{75} =\)

\(\bf \sqrt{2^{2}\cdot3} -\sqrt{3^{3}} +2\sqrt{3\cdot5^{2}} =\)

\(\bf 2\sqrt{3} -3\sqrt{3} +2\cdot5\sqrt{3} =\)

\(\bf 2\sqrt{3} -3\sqrt{3} +10\sqrt{3} =\)

\(\bf 12\sqrt{3} -3\sqrt{3}=\blue{\underline{~9\sqrt{3}~}}\)

\(==SalmonWorldTopper==\)

Answer:

The lines are perpendicular. Option B.

Explanation:

Equation of the Line

One of the characteristics of the line is its slope. It can be determined in two ways:

* From the equation y=mx+b, the m is the slope. The given equation is y=4x-5. Thus, the slope of this line is m=4.

* Suppose we know the line passes through points A(x1,y1) and B(x2,y2). The slope can be calculated with the equation:

\(\displaystyle m=\frac{y_2-y_1}{x_2-x_1}\)

The points are (3,4) and (7,3), thus the slope is:

\(\displaystyle m=\frac{3-4}{7-3}=-\frac{1}{4}\)

A. For two lines to be parallel, their slopes must be equal. Since m1=4 and m2=-1/4, the lines are not parallel. Incorrect

B. For two lines to be perpendicular, their slopes must meet the condition:

\(m1*m2=-1\)

4*(-1/4)=-1

Both lines are perpendicular. Correct choice

D. Since choice B. is correct, this cannot be true. Incorrect

Given :

Ellis is making some beef burgers for his friends.

His recipe 500g of beef mince and 120g of cheese to make four burgers.

He buys 1.5 of mince and 400g of cheese, and makes as many burgers as possible.

To Find :

How much cheese will he have left over.

Solution :

500 g and 120 g of beef mince and cheese respectively make 4 burgers.

125 g and 30 g of beef mince and cheese respectively make 1 burgers.

Now, we will keep increasing  the ingredients until there is any shortage of any ingredients.

1000 g and 240 g will make 8 burgers.

1500 g and 360 g will make 12 burgers.

1625 g and 390 g will make 13 burgers.

Cheese left is ( 400 - 390 ) g = 10 g.

Therefore, 10 grams of cheese will be left.

Answer:

7 square feet

Explanation:

The width of the rectangle is 3/4 ft and the length is 9 1/3 ft.

First, we need to convert 9 1/3 ft to a fraction, so

Then, the length of the rectangle is 28/3 ft

Now, we can calculate the area of the garden as

Therefore, the area is 7 square feet.

The total number of cups of flour that Rebecca will need to bake three cakes is 369 cups of flour.

Multiplication is the process of multiplying, therefore, adding a number to itself for the number of times stated. For example, 3 × 4 means 3 is added to itself 4 times, and vice versa for the other number.

Given that the recipe for one cake calls for 123 cups of flour. Also, Rebecca needs to bake three cakes, therefore, the total number of cups of flour that Rebecca will need is,

Total number of cups of flour = Number of cakes ×  Number of cups of flour in a cake

                                                 = 3 cakes × 123 cups of flour per cake

                                                 = 369 cups of flour

Hence, the total number of cups of flour that Rebecca will need to bake three cakes is 369 cups of flour.

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Answer:

$3000

Step-by-step explanation:

I = $1200, P = x, R = 8%, T = 5 years

I = PRT

100

1200 = x X 8 X 5

100

120000 = 40x

x = 120000

40

x = $3000

You deposited the principal amount of $3000 into the account, which is determined by simple interest formula.

Given:

Interest (I) = $1200

Rate (R) = 8% = 0.08 (expressed as a decimal)

Time (T) = 5 years

To find the amount of money deposited into the account, we can use the formula for simple interest:

Simple Interest (I) = Principal (P) × Rate (R) × Time (T)

Let's solve for the Principal (P):

$1200 = P × 0.08 × 5

To find P, divide both sides by (0.08 × 5):

P = $1200 / (0.08 × 5)

P = $1200 / 0.4

P = $3000

You deposited $3000 into the account.

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By permutation and combination, Maximum 171 number of different  2 - person teams are possible.

Provide an example of permutation and combination?

An arrangement of things in a specific order is referred to as a permutation. In this arrangement, the components or components of sets are organized in a linear or sequential order.

                       As an illustration, set A=1,6 has the permutation 2, which is 1,6,1. Permutations include the arrangement of individuals, digits, numbers, alphabets, letters, and colors. Combinations include things like choosing a menu, cuisine, clothing, a subject, and a team.

Total number of ways to choose different 2 person out of 19 person.

                     = ¹⁹C₂

              = 19!/2! (19 - 2)!

              =  19!/2!   17!

             = 19 * 18 * 17!/2 * 1 * 17!

            = 19 * 7

              = 171

Hence, maximum 171 number of different  2 - person teams are possible.

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To calculate the probability that at least two people in a class of 30 share the same birthday, we can use the complement rule, which states that the probability of an event happening is equal to one minus the probability of the event not happening.

If we assume that birthdays are uniformly distributed throughout the year (i.e., each day is equally likely to be someone's birthday), then the probability that no two people in the class share the same birthday is:

365/365 * 364/365 * 363/365 * ... * 336/365

This is because the first person can have any birthday (probability of 365/365), the second person must have a different birthday (probability of 364/365), the third person must have a different birthday than the first two (probability of 363/365), and so on, up to the 30th person, who must have a different birthday than the first 29 (probability of 336/365).

Calculating this probability gives us:

(365/365) * (364/365) * (363/365) * ... * (336/365) ≈ 0.2937

So the probability that no two people in the class share the same birthday is approximately 0.2937.

Using the complement rule, the probability that at least two people in the class share the same birthday is:

1 - 0.2937 = 0.7063

Therefore, the probability that at least two people in a class of 30 share the same birthday is approximately 0.7063, or 70.63%.

Answer:

AB || CE, so we have triangle DEO, two of whose angles are 100° and 26° (from point D, draw DE such that CD + DE = CE intersects BO). The third angle of this triangle measures 54°, so

x = 180° - 54° = 126°.

Answer:

1.domain = all the real numbers

range = all the real numbers

2. Yes. A linear function when graphed always has a straight line.

The car unit rate of the race car is 6 miles/minute.

A unit rate specifies how many units of the first type of quantity equal to one unit of the second type of quantity. Examples of unit rates are km/hour, m/sec, cost/litre, and so on.

The denominator of a unit rate is always 1. To calculate the unit rate, divide the denominator by the numerator so that the denominator equals 1. For example, if 50km is covered in 5.5 hours, the unit rate will be 50km/5.5 hours = 9.09 km/hour.

Given that,

Quantity = 48 miles

Time taken = 8 minutes.

Thus, The car unit rate of the race car is 6 miles/minute.

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The remainder is 360.

When a polynomial p(x) is divided by a linear polynomial (x - a), then the remainder is equal to p(a).

Given a cubic polynomial, x³+8x²+11x-20

The zero of the linear polynomial.

Substitute it in the given polynomial.

As a result, we get the remainder.

x - 5 = 0

x = 5

Substitute 5 to x³ + 8x² + 11x - 20:

5³ + 8×5² + 11×5 - 20 = 125 + 8×25 + 55 - 20 = 160 + 200 = 360

Hence, The remainder is 360.

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Answer:

24 cm^2

Step-by-step explanation:

There are 6 sides on a cube.

If the length of a side is 2, then the area of a face is 4 because it is a square.

4 x 6 = 24.

For a set population, a parameter does not change. A parameter is a numerical value that describes some aspect of a population, such as the mean, median, or standard deviation.

It is a fixed value that represents the entire population and does not change as new data is collected.

If there are three different samples of the same size from a set population, it is possible to get three different values for the same statistic.

Because a sample is a subset of a population, the values of statistics calculated from samples will vary depending on the specific individuals or observations that are included in the sample. Even if the samples are of the same size, they will likely have different values for the statistics because of the randomness of sampling.

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Answer:

  40 seconds

Step-by-step explanation:

You have a Ferris wheel such that the height of a rider is modeled by d=30sin(πt/20)+15, and you want to know the time it takes for one revolution.

The sine function has a period of 2π. The value of the function when the argument is 2π is the same as when it is zero. The period is the time difference between those argument values. Since the argument is 0 when t=0, we only need to find the value of t that makes the argument 2π:

  2π = πt/20

  40 = t . . . . . . . multiply by 20/π

The Ferris wheel makes one revolution in 40 seconds.

The solution is x = 0 and y = 22.

Equation 1: y = -3x + 22

Substitute y in Equation 2:

5x + 2(-3x + 22) = 44

Simplify and solve for x:

5x - 6x + 44 = 44

-x + 44 = 44

-x = 0

x = 0

Substitute x = 0 back into Equation 1 to find Y:

Y = -3(0) + 22

Y = 0 + 22

Y = 22

So the solution is x = 0 and y = 22.

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A positive divided by a negative always results in a negative quotient.

Let's use the example 8 / (-2) again. We can write this expression as:

8 / (-2) = 8 / (-1) * 2

We can then simplify the expression on the right-hand side by multiplying -1 and 2, which gives us:

8 / (-1) * 2 = -8 / 2

Now, we can divide 8 by 2, which gives us:

-8 / 2 = -4

So we see that the quotient is negative.

We can generalize this to any positive number divided by a negative number. Let's say we have a positive number a and a negative number -b. We can write the expression as:

a / (-b) = a / (-1) * b

Multiplying -1 and b gives us:

a / (-1) * b = -a / b

So we see that the quotient is negative, since -1 times b is negative, and dividing a positive number by a negative number results in a negative quotient.

Therefore, we can conclude that when a positive number is divided by a negative number, the result is always negative.

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Answer:

8, 16, 26

Step-by-step explanation:

1 squared + (5*1) + 2 = 8

2 squared + (5*2) + 2 = 16

3 squared + (5*3) + 2 = 26

Hope it helps !

Answer:

8, 16, 26

Step-by-step explanation:

To find the first 3 terms substitute n = 1, 2, 3 into \(T_{n}\) , that is

\(T_{1}\) = 1² + 5(1) + 2 = 1 + 5 + 2 = 8

\(T_{2}\) = 2² + 5(2) + 2 = 4 + 10 + 2 = 16

\(T_{3}\) = 3² + 5(3) + 2 = 9 + 15 + 2 = 26

In each of the following cases, the condition that has not been met before revenue should be recognized is as follows:

a. In the case of Company Alpha accepting a contract to perform services in the future for $4,000, the condition that has not been met is "performance." Revenue should typically be recognized when the performance obligations under the contract are satisfied, meaning that the services have been provided or goods have been delivered.

b. In the case of Company Beta shipping products worth $6,000 to another company without order and offering the option to return the products, the condition that has not been met is "collectibility." Revenue should generally not be recognized until it is probable that the consideration (payment) for the products will be received.

c. In the case of Company Centric performing $20,000 of services for a firm with financial problems, the condition that has not been met is "collectibility." Similar to the previous case, revenue recognition should be postponed until it is probable that the consideration for the services will be received.

d. In the case of Company Radiant agreeing to determine the price later for services performed for another company, the condition that has not been met is "determination of price." Revenue should generally be recognized when the price is fixed or determinable, meaning that the amount to be received can be reasonably estimated.

It's important to note that these determinations are based on general accounting principles and specific circumstances may require professional judgment and interpretation of applicable accounting standards.

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Considerations for using an award fee contract: Payment linked to objective performance criteria, not based solely on subjective satisfaction. Dispute resolution and mutual agreement are separate issues. (Correct answer: a, d)

The considerations for using an award fee contract,

This means that the fee should be contingent upon meeting specific and measurable goals. (Correct answer)

Dispute resolution mechanisms, including court involvement, are typically addressed separately in contracts and are not directly related to the consideration before deciding to use an award fee contract.

It is essential to have mutual agreement and clarity on the terms and conditions for earning the fee.

The fee should not solely depend on subjective satisfaction but rather on objective performance criteria. (Correct answer)

In summary, the correct considerations before deciding to use an award fee contract are that the payment should be linked to objective performance criteria, and it should not be solely based on subjective satisfaction. The involvement of courts for dispute resolution and the mutual agreement between the customer and contractor are separate aspects that are not directly related to this particular consideration.

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Answer:

There are 30 girls

Step-by-step explanation:

The ratio is 3:5 so (3)*(6)= 18 boys , and (5)*(6)=30

30+18=48 members

There were 30 girls in swim team.

We have,

Total Members = 48

Ratio of Boys to Girls= 3:5

So, the number of boys are

= 3/8 x 48

= 3 x 6

= 18

and, the number of girls

= 5/8 x 48

= 5 x 6

= 30

Thus, 30 girls were in swim team.

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The error expression of  |A - N| in the given problem is: Absolute Error

The absolute error is gotten by subtracting the true value from the measured value. The answer is normally expressed as ± or with an absolute value sign. The absolute error equation is expressed as: Absolute error = |measured value - true value|

Relative error is defined as a measurement of error that depends on the absolute error of a measuring tool as well as a measured value. Relative error can thus be defined as a decimal or as a percentage.

Now, we are told that

A is an actual value.

N is near the value,

From the definition of absolute error, we can clearly state that |A - N| is known as absolute error.

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Answer:

The variance of Y is given by the expression (2/5) * y^(5/2) - y.

Step-by-step explanation:

To calculate the variance of a continuous random variable, we use the formula:

Var(X) = E[X²] - (E[X])²

Let's start with calculating var(X):

The probability density function (PDF) of X is given as:

f(x) = 2x² for 0 < x ≤ 2, and f(x) = 0 for other values.

To calculate the variance of X, we need to find the expected value E[X] and the expected value of the square E[X²].

First, let's calculate E[X]:

E[X] = ∫(x * f(x)) dx

For 0 < x ≤ 2, f(x) = 2x²:

E[X] = ∫(x * 2x²) dx

= ∫(2x³) dx

= [1/2 * x⁴] from 0 to 2

= 1/2 * (2⁴ - 0⁴)

= 8/2

= 4

Next, let's calculate E[X²]:

E[X²] = ∫(x² * f(x)) dx

For 0 < x ≤ 2, f(x) = 2x²:

E[X²] = ∫(x² * 2x²) dx

= ∫(2x⁴) dx

= [1/2 * x⁵] from 0 to 2

= 1/2 * (2⁵ - 0⁵)

= 16/2

= 8

Now, we can calculate var(X):

Var(X) = E[X²] - (E[X])²

= 8 - (4)²

= 8 - 16

= -8

However, variance cannot be negative, so the variance of X is not meaningful in this case.

Moving on to var(Y):

The probability density function (PDF) of Y is given as:

f(y) = 1/(2√y) for 0 ≤ y ≤ 1, and f(y) = 0 for other values.

To calculate the variance of Y, we again need to find the expected value E[Y] and the expected value of the square E[Y²].

First, let's calculate E[Y]:

E[Y] = ∫(y * f(y)) dy

For 0 ≤ y ≤ 1, f(y) = 1/(2√y):

E[Y] = ∫(y * 1/(2√y)) dy

= ∫(1/(2√y)) dy

= (1/2) ∫(1/√y) dy

= (1/2) * 2√y + C

= √y + C

Since E[Y] is the expected value, it should be a constant. Therefore, C must be 0.

E[Y] = √y

Next, let's calculate E[Y²]:

E[Y²] = ∫(y² * f(y)) dy

For 0 ≤ y ≤ 1, f(y) = 1/(2√y):

E[Y²] = ∫(y² * 1/(2√y)) dy

= ∫(y^(3/2)) dy

= (2/5) * y^(5/2) + C

= (2/5) * y^(5/2) + C

Again, since E[Y²] is the expected value, C must be 0.

E[Y²] = (2/5) * y^(5/2)

Now, we can calculate var(Y):

Var(Y) = E[Y²] - (E[Y])²

= (2/5) * y^(5/2) - (√y)²

= (2/5) * y^(5/2) - y

So, the variance of Y is given by the expression (2/5) * y^(5/2) - y.

Var(X) is approximately -17.07 and Var(Y) is approximately 0.1. Variance measures the spread of a dataset and shows how much individual data points differ from the mean. A higher variance means there is greater diversity among the data points.

To calculate the variance of a continuous random variable, we need to use the following formula:

Var(X) = \(\int[(x - E(X))^2 \times f(x)] dx\)

where E(X) is the expected value or mean of X.

For the first random variable X with the probability density function f(x) = 2x² for 0 < x ≤ 2, we first need to calculate the mean:

E(X) = \(\int [x \times f(x)] dx\)

= \(\int [x \times 2x^2] dx\)

= 2∫[x³] dx

= 2[x⁴/4] evaluated from 0 to 2

= 2(2⁴/4 - 0⁴/4)

= 2(16/4)

= 8

Now, we can calculate the variance:

Var(X) = \(\int [(x - 8)^2 \times 2x^2] dx\)

=\(2\int [(x - 8)^2 \times x^2] dx\)

=\(2\int [x^4 - 16x^3 + 64x^2] dx\)

= 2[x⁵/5 - 4x⁴ + 64x³/3] evaluated from 0 to 2

= 2[(2⁵/5 - 4(2⁴) + 64(2³)/3) - (0⁵/5 - 4(0⁴) + 64(0³)/3)]

= 2[(32/5 - 4(16) + 64(8)/3) - (0 - 0 + 0)]

= 2[(32/5 - 64 + 512/3) - 0]

= 2[-128/15]

= -256/15

≈ -17.07 (rounded to two decimal places)

For the second random variable Y with the probability density function f(y) = 1/(2√y) for 0 ≤ y ≤ 1, the mean is:

E(Y) = \(\int [y \times f(y)] dy\)

= \(\int [y \times 1/(2\sqrt{y})] dy\)

= \(\int [1/(2\sqrt{y} )] dy\)

=\(\int [y^{(-1/2)}/2] dy\)

=\((y^{(1/2)}/2)\) evaluated from 0 to 1

= (1/2 - 0/2)

= 1/2

= 0.5

Now, let's calculate the variance:

Var(Y) = \(\int [(y - 0.5)^2 \times (1/(2\sqrt{y} ))] dy\)

= \(\int [(y - 0.5)^2/(2\sqrt{y} )] dy\)

= \(\int [(y^2 - y + 0.25)/(2\sqrt{y} )] dy\)

= \((1/2)\int [(y^{(3/2)} - y^{(1/2)} + 0.25y^{(-1/2)})] dy\)

=\((1/2)[(2/5)y^{(5/2)} - (2/3)y^{(3/2)} + 0.5y^{(1/2)}]\) evaluated from 0 to 1

=\((1/2)[(2/5)(1^{(5/2)}) - (2/3)(1^{(3/2)}) + 0.5(1^{(1/2)})] - (0 - 0 + 0)\)

= (1/2)[(2/5) - (2/3) + 0.5]

= (1/2)[(6/15) - (10/15) + 0.5]

= (1/2)[-4/15 + 0.5]

= (1/2)[-4/15 + 7/15]

= (1/2)[3/15]

= 3/30

= 1/10

= 0.1

Therefore, Var(X) ≈ -17.07 and Var(Y) = 0.1. Variance provides insight into the variability and volatility of a set of values, with a higher variance indicating greater diversity among the data points.

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Answer:

you need to stop cheating or your not going to learn anything BOI

SHAPE UP BOI

The Markov Chain Model is the best model to predict what activity people will do in two days based on the current weather. It is suitable for predicting outcomes based on probabilities over time, and it considers only the current weather conditions and the probabilities of the different activities.

To predict what activity people will do in two days based on the current weather, I would use a Markov Chain Model. This model is suitable for predicting outcomes based on probabilities over time. In this case, the model would use the current weather (sunny) and the probabilities of the different activities (going for a walk, shopping, or staying home and cleaning) to predict the probability of each activity in two days. The Markov Chain Model assumes that the probability of an activity depends only on the current weather, and not on any previous or future weather conditions.

A Markov Chain Model is the most appropriate model to predict what activity people will do in two days based on the current weather. This model is suitable for predicting outcomes based on probabilities over time, and it would use the current weather (sunny) and the probabilities of the different activities (going for a walk, shopping, or staying home and cleaning) to predict the probability of each activity in two days. The Markov Chain Model assumes that the probability of an activity depends only on the current weather, and not on any previous or future weather conditions.

In conclusion, the Markov Chain Model is the best model to predict what activity people will do in two days based on the current weather. It is suitable for predicting outcomes based on probabilities over time, and it considers only the current weather conditions and the probabilities of the different activities. By using this model, we can make accurate predictions about what people are likely to do in the future, based on the current weather conditions.

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