The drug warfarin, an anticoagulant, is metabolized by the body and leaves at a rate proportional to amount still in the body. Use this fact in both parts (a) and (b) below.
(a) If a patient, who has no Warfarin in his system, is given a pill containing 2.5 mg of Warfarin, write a differential equation for the quantity Q(t) (in mg) of warfarin in the body t hours later. Be sure to include an initial condition.
(b) A second patient, who has no Warfarin in her system, is given Warfarin intravenously at a rate of 0.5 mg/hour. Write a differential equation for the quantity Q(t) (in mg) of warfarin in the body of this patient t hours later. Be sure to include an initial condition.
*This is the problem, there is no more information provided.
These are my answers, just want to make sure they are right:
(a) Q' = -2.5Q Q(0) = 0
(b) Q' = 0.5Q - 2.5Q Q(0) = 0

Answer:

look dude or girl (just incase) I know the answer but since your parents and teachers want the best for you. You need to do it on your own.

Step-by-step explanation:

Using probability of union set,

the probability that person you choose is either a woman or has never been married is 0.66..

We have given that

If X be random variable that an American adult selected.

Assume that

A : selected adult is a women

B : selected adult has never married

Probability that you choose a woman, P(A) = 0.52

Probability that the person you choose has never been married , P(B) = 0.25

Probability that you choose a woman who has never been married , P(A∩B) = 0.11

we have to calculate probability that person you choose is either a woman or has never been married, P(A∪B)

Using the formula,

P(A∪B ) = P(A) + P(B) - P(A∩B)

pluging all known values in above formula we get

=> P(A∪B ) = 0.52 + 0.25 - 0.11

=> P(A∪B) = 0.77 - 0.11 = 0.66

Hence, the required probability is 0.66..

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The total quantity produced when p = 5 is 26 in the long run.

In the short run, each firm will produce where its marginal cost equals the market price, which we'll denote as p.

So, for Type A firms, the short-run supply curve is:

q4(p) = (p-2)/2

And for Type B firms, the short-run supply curve is:

qB(p) = (p-2)/6

The short-run market supply is simply the sum of the quantities supplied by each type of firm at a given price level. So, if there are 10 Type A firms and 6 Type B firms, the short-run market supply at a price level of p is:

Qs(p) = 10q4(p) + 6qB(p)

= 10(p-2)/2 + 6(p-2)/6

= 8p - 20

The total quantity produced when p=5, we can substitute p=5 into the market supply equation we just derived:

Qs(5) = 8(5) - 20

= 20

So, the total quantity produced when p=5 is 20.

The long run, firms can enter or exit the market, and as a result, the number of firms in each market may change.

In this case, we'll assume that the number of Type A and Type B firms can adjust freely in the long run, and that each firm earns zero economic profit in the long run.

If there are zero economic profits, each firm's total revenue (TR) must equal its total cost (TC), which means that price must equal average total cost (ATC).

For Type A firms, ATC4(q) = TC4(q)/q = 1/q + 2 + q, so:

5 = 1/q + 2 + q

Rearranging and solving for q, we get:

q4 = 2

So each Type A firm will produce 2 units of output in the long run.

For Type B firms, ATCB(q) = TCB(q)/q = 6/q + 2 + 3q, so:

5 = 6/q + 2 + 3q

Rearranging and solving for q, we get:

qB = 1

So each Type B firm will produce 1 unit of output in the long run.

If there are 10 Type A firms and 6 Type B firms, the total quantity produced in the long run when p=5 is:

Qlr = 10q4 + 6qB

= 10(2) + 6(1)

= 26

So, the total quantity produced when p = 5 is 26 in the long run.

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The rate of change of the function that has a graph that passes

through the points (-1, 3) and (-2,-4) is slope and is equal to 7.

We have given two points  (-1, 3) and (-2,-4) .

Rate of change of graph is given by slope

Using slope formula , we get

      m = -4 - 3 / -2 - (-1)

      m = -7 / -2 + 1

      m = -7 / -1

       m = 7

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In the regression model Yi = β0 + β1Xi + β2Di + β3(Xi × Di) + ui, β2 represents the coefficient associated with the binary variable D. It measures the average difference in the response variable Y between the two groups defined by the binary variable, holding all other variables constant.

In the given regression model, β2 represents the coefficient associated with the binary variable D. This coefficient measures the average difference in the response variable Y between the two groups defined by the binary variable, while holding all other variables in the model constant. The coefficient β2 captures the additional effect on Y when the binary variable D changes from 0 to 1.

For example, if D represents a treatment group and non-treatment group, β2 would represent the average difference in the response variable Y between the treated and non-treated individuals, after controlling for the effects of other variables in the model.

Interpreting the value of β2 involves considering the specific context of the study and the units of measurement of the variables involved. A positive value of β2 indicates that the group defined by D has a higher average value of Y compared to the reference group, while a negative value indicates a lower average value of Y.

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Answer:

35 ÷ 5 = 7dogs      Equation: 5x = $35    

Step-by-step explanation:

5 times the amount of dogs she walked equals $35

Just divide 35 by 5 and it will give you how many dogs she walked!

Hope this helps!

Concept testing is the test done before product launch, clients try a sample product and are then surveyed about whether they would buy the product again. So, option D is correct.

In concept testing, the companies will give newly launched products or new ideas or prototype products to the potential customers, to take reactions from them. This feedback is collected and assisted and analyze the feedbacks in order to improve their products sale.

The main aim of this concept testing is to collect information, patron needs, and assertions and can take powerful good decisions. This can gauge the market price and sale of the products through advertising.

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The complete question is:

type of test before product launch, customers try a sample product and are then surveyed about whether they would buy/use the product again. this process is known as:

a. premarket testing

b. alpha testing

c. prelaunch testing

d. concept testing

e. market testing.

ABCD can be square if the distance between all four points is the same.

A square is a two-dimensional closed shape with four equal sides and four corners. The opposite sides of the square are parallel to each other. A square is also a rectangle with equal length and width. A square is an equilateral quadrilateral with all four equal sides and all four equal angles. Square angles are right angles or 90 degrees. Also, the diagonals of the square are equal and bisect at 90 degrees. A square is just a quadrilateral with four equal sides. There are many rectangular objects around us.

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Given:

The trigonometric equation is,

Explanation:

Simplify the equation for angle theta.

So answer is,

Answer:

10.

Step-by-step explanation:

2(a+b)

= 2(2+3)

= 2(5)

= 10

Hope this helped!

Answer:

10

Step-by-step explanation:

2(2+3)  FOIL

2x2=4

2x3=6

4+6=10

The four integers are 5, 5, 12 and 14.

A data set's mean (average) is calculated by summing all of the numbers in the set, then dividing by the total number of values in the set.

When a data collection is ranked from least to greatest, the median is the midpoint. The number that appears most frequently in a data set is called the mode.

Given:

Mean= 9

Median = 8.5

Mode = 5

Range = 9.

let the numbers arranged in ascending order are a,b,c,d

Median: b+ c /2 = 8.5

b+ c = 17 (number in the middle)

Mode: a = 5, b= 5 {because mode is the most repeating data}

Range: d- a = 9 (last one minus first one)

d= 9 + 5

d= 14

Now, b+c = 17

c= 17-5

c= 12

So, the data is 5 ,5, 12, 14.

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A. To save for her payout annuity with an ordinary annuity set up thirty years before her retirement, Holly Krech must make a monthly payment of $175.97.

B. If she sets up the ordinary annuity twenty years before her retirement, Holly Krech must make a monthly payment of $432.00.

To calculate the monthly payment for an ordinary annuity set up thirty years before retirement, we can use the formula for the present value of an ordinary annuity. Given the deposit amount of $218,437.048 and the total amount received from the annuity of $432,000, and solving for the monthly payment, we find that Holly must make a monthly payment of $175.97.

For an ordinary annuity set up twenty years before retirement, we use the same formula for present value. With the deposit amount and total amount received unchanged, we solve for the monthly payment, which comes out to be $432.00.

It's important to note that the monthly payment increases when the annuity is set up closer to the retirement date. This is due to the shorter time period available for saving, resulting in a higher required contribution to reach the desired payout amount.

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Answer:

2(6e-3f+10g)

Answer (I think): 12e-6f+20g

Step-by-step explanation:

Answer:

12e - 6f + 20g

Step-by-step explanation:

2(6e - 3f + 10g) is the given equation. Because of the grouping, we know  that the entire part in parentheses is multiplied by two. Now the distributive property helps us by letting us multiply each individual part of the parentheses by two.

6e becomes 12e

-3f becomes -6f

and 10g becomes 20g

Now when we put those together, it becomes 12e - 6f + 20g

Hope this helped!

Answer:

3/4 x 3 = 9/4 = 2 1/4

ANSWER 2 1/4

Given:

Current population = x

The population of a city is expected to decrease by 6% next year.

To find:

The expression that represents the expected population next year. ​

Solution:

We have,

Current population = x

Decrease rate = 6%.

Expected population next year = Current population - 6% of Current population

                                                    =\(x-\dfrac{6}{100}x\)

                                                    =\(x-0.06x\)

                                                    =\(0.94x\)

Therefore, the expression for the expected population next year is 0.94x.

The most appropriate choice for unitary method will be given by

Total cost of 200g raspberries and 200 g strawberries is £4.14

What is unitary method?

It is the method by which we find the value of single unit form the value of multiple unit and value of multiple unit from the value of single unit.

Here,

500 g of strawberries cost £4.10

1 g of strawberries cost £\(\frac{4.10}{500}\)

300 g of strawberries cost £\(\frac{4.10}{500} \times 300\)

                                           = £2.46

400 g of raspberries 300g of strawberries cost a total of £7.46

Let the cost of 400 g of raspberries be  £x

so,

x + 2.46 = 7.46

x = 7.46 - 2.46

x =  £5

cost of 400 g of raspberries =  £5

cost of 1 g of raspberries =  £\(\frac{5}{400}\)

cost of 200 g of raspberries =  £\(\frac{5}{400} \times 200\)

                                                = £2.5

cost of 300 g strawberries = £2.46

cost of 1 g strawberries = £\(\frac{2.46}{300}\)

cost of 200 g of strawberries = £\(\frac{2.46}{300} \times 200\)

                                                 = £1.64

Total cost of 200g raspberries and 200 g strawberries = £(2.5 + 1.64)

                                                                                            = £4.14

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Complete question

400 g of raspberries and 300 g of strawberries cost a total of £7.46.

500 g of strawberries cost £4.10.

Work out the total cost of 200 g of raspberries and 200 g of strawberries.

Answer:

a) that would cost 7.00 pounds

b) two packages of the 2kg and one package of 1kg, and that would cost 6.70 pounds

Step-by-step explanation:

Step-by-step explanation:

33÷8= 4 with one left over

4 and 1/8 is your mixed number!

Answer:

\(1. m_ADC=3x+10 and m~BC=2X-30,what is m™AC2. m2BDC=3(x-5) and m--BC=x+25,what is MZA3. m2A= 1/2 (x-10)and m_C=1/3 x+5,find m-BC4. if m(BC)=4x-6 and m_C=x+10,waht is m_BDC?\)

Step-by-step explanation:

The statement "The sample statistic usually differs from the population parameter because of bias" is false because the differences is due to random sampling variability.

The sample statistic usually differs from the population parameter due to random sampling variability, and not necessarily because of bias. However, bias can also contribute to differences between the sample statistic and population parameter.

Bias refers to a systematic deviation of the sample statistic from the population parameter in one direction. Bias occurs when the sample selection process favors some characteristics of the population and excludes others.

On the other hand, sampling variability is a natural variation that occurs when taking different samples from the same population.

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Answer:

50

Step-by-step explanation:

Follow the graph and the bricks go up by 50 per 1 layer

For 1 layer 50 bricks, for 2 layers 100 bricks, for 3 layers 150 bricks, and for 4 layers he uses 200 bricks.

The graph for a straight line is called the linear graph in the linear graph the increment of the data for both the axes is constant so it gave a linear relationship.

As we can see in the graph there is a relationship between the number of bricks and the layers of the bricks.

Therefore, for 1 layer 50 bricks, for 2 layers 100 bricks, for 3 layers 150 bricks, and for 4 layers he uses 200 bricks.

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1. The two triangles are congruent. ΔABC ≅ ΔFDE by AAS.

2. They are not necessarily congruent.

3. They are congruent. GHI ≅ ΔLJK by ASA.

1. The two triangles have two pairs of congruent angles and a pair of congruent non-included sides. Therefore, they are congruent by the AAS conrguence theorem. Thus, ΔABC ≅ ΔFDE

2. The two triangles have two pairs of congruent sides. This is not enough to prove they are congruent triangles. Therefore, they are not necessarily congruent.

3. The two triangles have two pairs of congruent angles and a pair of congruent included sides. Therefore, they are congruent by the ASA conrguence theorem. Thus, GHI ≅ ΔLJK.

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From the given information, the Cartesian coordinates of the complex number are x = 0 and y = -2.

To find the Cartesian coordinates x and y of the complex number, we need to convert the complex number from polar form to rectangular form.

We are given that:

r = 2

θ = 3π/2 (since e^(iθ) = e^(i(3π/2)) = -i)

Using the conversion formula, we have:

x = r cos(θ) = 2 cos(3π/2) = 0

y = r sin(θ) = 2 sin(3π/2) = -2

In symbolic notation, we can write the complex number as

2e^(3πi/2) = 2(cos(3π/2) + i sin(3π/2)) = 2i

So the complex number is equal to 2i in rectangular form.

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Therefore, the compound interest of the annuity due of BD 400 paid each 4 months for 6.2 years at a nominal rate of 3% per annum is BD 40,652.17.

Compound interest of an annuity due can be calculated using the formula:A = R * [(1 + i)ⁿ - 1] / i * (1 + i)

whereA = future value of the annuity dueR = regular paymenti = interest raten = number of payments First, we need to calculate the effective rate of interest per period since the nominal rate is given per annum. The effective rate of interest per period is calculated as

:(1 + i/n)^n - 1 = 3/1003/100 = (1 + i/4)^4 - 1

(1 + i/4)^4 = 1.0075i/4 = (1.0075)^(1/4) - 1i = 0.0303So,

the effective rate of interest per 4 months is 3.03%.Next, we can substitute the given values in the formula:

A = BD 400 * [(1 + 0.0303)^(6.2 * 3) - 1] / 0.0303 * (1 + 0.0303)A = BD 400 * [4.227 - 1] / 0.0303 * 1.0303A = BD 400 * 101.63A = BD 40,652.17

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Answer:

B

Step-by-step explanation:

15>22+x

or, -x+15>22

or, -x>22-15

or, -x>7

or, x<-7 is your answer.

If a red ball is drawn at random from one of the urns, there is a higher probability (2/3) or 0.667 that it came from Urn A rather than Urn B. This suggests that Urn A is more likely to be the source of the red ball.

To calculate the probability that Urn A was chosen given that a red ball was drawn, we can use Bayes' theorem.

Let's denote the events:

A = Urn A was chosen

B = Urn B was chosen

R = A red ball was drawn

We want to find P(A|R), the probability that Urn A was chosen given that a red ball was drawn.

According to Bayes' theorem:

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

P(R|A) is the probability of drawing a red ball given that Urn A was chosen. Since Urn A has four red balls and four black balls, the probability of drawing a red ball from Urn A is 4/8 = 1/2.

P(A) is the prior probability of choosing Urn A, which is 0.5 since there is an equal chance of selecting either Urn A or B.

P(R) is the overall probability of drawing a red ball, which can be calculated by considering all possible scenarios:

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

P(R|B) is the probability of drawing a red ball given that Urn B was chosen. Since Urn B has two red balls and six black balls, the probability of drawing a red ball from Urn B is 2/8 = 1/4.

P(B) is the prior probability of choosing Urn B, which is also 0.5.

Substituting the values into the equation:

P(R) = (1/2) * (1/2) + (1/4) * (1/2) = 3/8

Now we can calculate P(A|R) using Bayes' theorem:

P(A|R) = (P(R|A) * P(A)) / P(R) = (1/2 * 1/2) / (3/8) = 4/6 = 2/3

Therefore, the probability that Urn A was chosen given that a red ball was drawn is 2/3 or approximately 0.667.

In conclusion, if a red ball is drawn at random from one of the urns, there is a higher probability (2/3) that it came from Urn A rather than Urn B. This suggests that Urn A is more likely to be the source of the red ball.

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Question 9

The point (30,15) means that x = 30 and y = 15 pair up together.

Similarly, (40,25) means we have x = 40 and y = 25 paired up.

Apply the slope formula to get

m = (y2-y1)/(x2-x1)

m = (25-15)/(40-30)

m = 10/10

m = 1

The slope is 1.

It tells us that each time y goes up by 1, x is also increasing by 1.

slope = rise/run = 1/1

rise = 1, run = 1

The rise is the change in y, the run is the change in x.

This means the plant's height (y) goes up by 1 cm each time the number of days (x) goes up by 1.

In short, the plant's height is increasing by 1 cm per day

========================================================

Question 10

y varies directly with x, so y = kx for some constant k.

We're then told that x = -1 and y = -2 pair up together.

Let's find k based on those items

y = kx

y/x = k

k = y/x

k = -2/(-1)

k = 2

So y = kx becomes y = 2x

Then we're asked to find x when y = -4

y = 2x

y/2 = x

x = y/2

x = -4/2

x = -2

Step-by-step explanation:

a + 9 = 6

p + 20 = -30

Here, we want to know the percentage that is 1 standard deviation above the mean and 1 standard deviation below the mean