Find all real values of ‘t‘ so that angle between the vectors u = (t − 2, 6 − t, −4) and v = (−4, t − 2, 6 − t) is 120◦ .

Answer:

The area of square 2 is 130 units square

Step-by-step explanation:

see the attached figure to better understand the problem

we know that

The area of a square is

[tex]A=b^{2}[/tex]

where

b is the length side of the square

Let

b1 ----> the length side of square 1

b2 ----> the length side of square 2

b3 ----> the length side of square 3

Applying the Pythagoras Theorem

[tex]b1^{2}=b2^{2}+b3^{2}[/tex] -----> equation A

we have

[tex]A1=250\ units^2[/tex]

[tex]A3=120\ units^2[/tex]

Remember that

[tex]A=b^{2}[/tex]

so

[tex]A1=b1^2=250\ units^2[/tex]

[tex]A3=b3^2=120\ units^2[/tex]

substitute in the equation A and solve for b2^2

[tex]250=b2^{2}+120[/tex]

[tex]b2^{2}=250-120[/tex]

[tex]b2^{2}=130[/tex]

[tex]A2=b2^{2}[/tex]

therefore

The area of square 2 is 130 units square

Answer:

The population in a statistical study is determined by all the individuals that could be part of the study, that is, all the individuals that have common characteristics that make them individuals of interest to the researcher.

In the study of the previous statement, the population is made up of all recruits from the US Army. UU. in Iraq at the time of the study.

Step-by-step explanation:

Final answer:

The population of interest in the study of stress levels among U.S. army recruits stationed in Iraq is all U.S. army recruits stationed in Iraq at the time of the study.

Explanation:

The question asks about the population of interest in a study of stress levels among U.S. army recruits stationed in Iraq. In this context, the population of interest refers to the entire group of individuals that the researchers aim to understand or make inferences about based on their study. Given the details of the study, the population of interest in this case includes all U.S. army recruits stationed in Iraq at the time of the study.

Answer:

b+3(3-2b)=1-2(b+1)  

One solution was found :

                  b = 10/3 = 3.333

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

               b+3*(3-2*b)-(1-2*(b+1))=0  

Step by step solution :

Step  1  :

Equation at the end of step  1  :

 (b+(3•(3-2b)))-(1-2•(b+1))  = 0  

Step  2  :

Equation at the end of step  2  :

 (b +  3 • (3 - 2b)) -  (-2b - 1)  = 0  

Step  3  :

Equation at the end of step  3  :

 10 - 3b  = 0  

Step  4  :

Solving a Single Variable Equation :

4.1      Solve  :    -3b+10 = 0  

Subtract  10  from both sides of the equation :  

                     -3b = -10

Multiply both sides of the equation by (-1) :  3b = 10

Divide both sides of the equation by 3:

                    b = 10/3 = 3.333

One solution was found :

                  b = 10/3 = 3.333

Step-by-step explanation:

Final answer:

To convert 9% to both a decimal and a reduced fraction: as a decimal, 9% is 0.09; as a reduced fraction, it is 9/100, which cannot be further reduced.

Explanation:

The question is about converting a percentage to a decimal and a reduced fraction. To find the decimal equivalent of 9%, you divide 9 by 100, which gives 0.09. For the reduced fraction, since 9% is equivalent to 9/100, you look for the greatest common divisor of 9 and 100, which is 1. Therefore, the fraction 9/100 is already in its reduced form since no number other than 1 divides both 9 and 100 evenly.

In summary:

Decimal: 0.09

Reduced fraction: 9/100

Answer:

under coverage

Step-by-step explanation:

From the given information we can say that 2% of households have no telephone, 14% have only cell phones, and another 25% have unlisted telephone numbers. Since, the facility is available some part of population and not available to the whole population so, clearly its an examples under coverage.

Answer:

Given dose (i.e 600 mg) lies outside the recommended range of  271.8-543.6 mg/day that too on the higher side

Hence, the prescription is not safe.

Step-by-step explanation:

Given:

Weight of medicine given per interval = 150 mg

time interval = 6 hours

thus, number of intervals per day = [tex]\frac{\textup{24}}{\textup{6}}[/tex] = 4

therefore,

the total dose of medicine provided per day = 4 × 150 = 600 mg

Now,

Recommended dosage =  20-40 mg/kg/day

weight of child = 30 lb

also,

1 lb = 0.453 kg

thus,

weight of child = 30 × 0.453 = 13.59 kg

Therefore, the recommended dose for the child

=  (  20-40 mg/kg/day ) × 13.59

= 271.8-543.6 mg/day

now,

the given dose (i.e 600 mg) lies outside the recommended range of  271.8-543.6 mg/day that too on the higher side

Hence, the prescription is not safe.

Answer:

Yes, The rational numbers are closed under multiplication.

Step-by-step explanation:

A rational number is a number which can be expressed in the form of a fraction [tex]\frac{x}{y}[/tex], where x and y are integers and y ≠ 0.

Now, closure property of multiplication states that if two rational numbers are multiplied then the product is also a rational number. Thus, if r and t are rational numbers, then

r×t = s, where s is the product of r and t

s is also a rational number.

Hence, the rational numbers are closed under multiplication.

This can be better explained with the help of an example [tex]\frac{3}{4} \times \frac{2}{5} = \frac{6}{20}[/tex],

It is clear that [tex]\frac{6}{20}[/tex] is a rational number.

Answer:

Step-by-step explanation:

Suppose the dimensions of the playground are x and y.

The total amount of the fence used is given and it is 780 ft. In terms of x and y this would be 3x+2y=780 (we add 3x because we want it to be cut in the middle). Therefore,  y= 780/2-3/2x. Now, the total area (A )to be fenced is

A=x*y= x*(390-3/2x)=-3/2 x^2+390x

Calculating the derivative of A and setting it equals to 0 to find the maximum

A'= -3x+390=0

This yields x=130.

Therefore y=780/2-3/2*130=195

Thus, the maximum area is 130*195=25,350ft^2

The rectangle's dimensions that maximize the total enclosed area are 130 feet (length) and 260 feet (width), resulting in a maximum area of 33,800 square feet.

This problem is about optimization, specifically in the context of a rectangle’s dimensions and area. Here's how to solve it step-by-step:

Firstly, visualize the fenced area as a rectangle divided int two equal rectangles. The total fencing used makes up perimeter which consists of three lengths (L) and two widths (W), i.e. 3L + 2W = 780 feet.

To simplify, express one variable in terms of the other. From the equation above, we can express W as (780 - 3L)/2.

The area of a rectangle is given by L × W. Substituting W from the equation above, Area = L * (780 - 3L)/2.

To maximize this area, find its maximum point using differentiation: d(Area)/dL = 0. You will find that L = 130 feet.

Substitute L = 130 feet into the width equation to find W = 260 feet. So, the maximum enclosed area is L * W = 130 * 260 = 33,800 square feet.

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Answer:

Depending on the path that we decide to take, the algebra can help us in many forms.

As an example in the pharmaceutical/medical area, the nurses and doctors use basic algebra formulas to calculate dosages on different drugs depending on variables such as the weigh of each patient (commonly expressed as X or Y).

They used to have some paper sheets with formulas for different drug preparations (liquid ones particularly) within hospitals to avoid errors in medication.

Algebra is an area of mathematics that deals with the study of symbols and the rules for manipulating these symbols. Elementary algebra is used in virtually every field and occupation there is. Algebra is also employed in healthcare.

As a healthcare provider, it is important to be able to read vital signs. Many of these are expressed as algebraic equations. Such equations can also be important when it comes to administering the right doses of medicine or converting different units of measurement.

At a rate of 60 numbers per minute, Amy would need approximately 5.28 hours to count to 19,000. Rounding to the nearest whole number gives a final estimate of 6 hours.

To answer the question, we'll need to estimate the time Amy would take to count to 19,000. She is counting at a frequency of 60 numbers per minute. This rate is constant throughout her counting.

Therefore, we need to divide the total number of numbers she is counting, which is 19,000, by the rate at which she is counting, which is 60 numbers per minute. The result is approximately 316.67 minutes. To convert this to hours, we divide by 60 (as there are 60 minutes in an hour). That gives us approximately 5.28 hours. Because the question asks for a reasonable whole number estimate, we can round this number up to give us a final answer of 6 hours.

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Answer:

Step-by-step explanation:

Demontra has to divide negative 100 by negative 2, which means she has to do:

[tex]\Rightarrow \frac {-100}{-2}[/tex]

This can be written as:

[tex]\Rightarrow \frac {-1\times 100}{-1\times 2}[/tex]

-1 / -1 = 1

Also, 100 / 2 = 50

So,

[tex]\Rightarrow \frac {-1\times 100}{-1\times 2}=50\times 1=50[/tex]

She got -200 which is wrong as she muliplied the numbers which is also wrong as -100 × -2 = 200

She did not done anything right.

Answer:

The answer is C, 3³.

Step-by-step explanation:

When you're dividing integers with exponents, you subtract the two exponent (and when multiplying them, you add them instead.)

In this case, you subtract 7 from 10 which gives you 3.

Answer:

[tex]\frac{3^{10}}{3^7}=3^3[/tex]

Step-by-step explanation:

The [tex]3^{10}[/tex] means we have ten copies of 3 on top; the [tex]3^{7}[/tex] means we have seven copies of three underneath.

[tex]\frac{3\cdot 3\cdot 3\cdot 3\cdot 3\cdot 3\cdot 3\cdot 3\cdot 3\cdot 3}{3\cdot 3\cdot 3\cdot 3\cdot 3\cdot 3\cdot 3}[/tex]

We have three extra 3's, and they are on top.

[tex]\frac{3\cdot 3\cdot 3}{1} =3^3[/tex]

Therefore,

[tex]\frac{3^{10}}{3^7}=3^3[/tex]

We can also use the The Quotient Rule for Exponents,

For any non-zero number x and any integers a and b [tex]\frac{x^a}{x^b}=x^{a-b}[/tex]

[tex]\frac{3^{10}}{3^7}=3^{10-7}=3^3[/tex]

Answer:

The elements of given set are -1, 0 and 1.

Step-by-step explanation:

The given set is

[tex]\{x\in R:x^3-x=0\}[/tex]

We need to find all the elements of given set.

The given equation is

[tex]x^3-x=0[/tex]           .... (1)

Solve this equation o find the value of x.

Taking out common factors.

[tex]x(x^2-1)=0[/tex]

Using zero product property,

[tex]x=0[/tex]

[tex]x^2-1=0[/tex]

[tex]x^2=1[/tex]

[tex]x=\pm 1[/tex]

All rational and irrational numbers are real numbers.

On solving equation (1) we get x = -1, 0, 1. All these numbers are real number. So, the elements of given set are -1, 0 and 1. The set is defined as

{ -1, 0, 1}

Therefore, the elements of given set are -1, 0 and 1.

Answer:

[tex] \frac{5\cdot 4\cdot 3}{10\cdot 9 \cdot 8}\approx 0.083[/tex]

Step-by-step explanation:

Getting all three marbles of green color only happens if every draw is a green marble. On the first marble draw, the urn has 10 marbles in it, out of which 5 are green. So the probability of drawing a green marble on this first draw is [tex]\frac{5}{10}[/tex]

Then, once this has happened, the second draw also needs to be a green marble. At this point in the urn there are only 9 marbles left, and only 4 of them are green. So the probability of drawing a green marble at this point is [tex] \frac{4}{9}[/tex]

Afterwards, on the last draw, a green marble also needs to be drawn. At this point there are only 8 marbles left on the urn, and only 3 of them are green. So the probability of drawing a green marble on this last draw is [tex] \frac{3}{8}[/tex]

Therefore the probability of drawing all three marbles of green color is

[tex] \frac{5}{10}\cdot\frac{4}{9}\cdot\frac{3}{8}\approx 0.083[/tex]

Answer:

The probability that a transaction can be completed in less than 100 milliseconds if 30% of transactions are changes is 0.718

Step-by-step explanation:

Let A be the vent of new item

Let B be the event of transaction completed in less than 100 milliseconds

[tex]A^c = \text{change item}[/tex]

Since we are given that  30% of transactions are changes,

So, [tex]A^c =0.3[/tex]

We are given that The addition of an item can be completed less than 100 milliseconds 94% of the time

So, [tex]P(B|A)=0.94[/tex]

We are also given that only 20% of changes to a previous item can be completed in less than this time.

So,[tex]P(B|A^c)=0.2[/tex]

[tex]P(A)=1-P(A^c) = 1 - 0.3 = 0.7[/tex]

So, the probability that a transaction can be completed in less than 100 milliseconds :

= [tex]P(B|A)  \times P(A) +P(B|A^c) \times P(A^c)[/tex]

= [tex]0.94  \times 0.7 +0.2 \times 0.3[/tex]

= [tex]0.718[/tex]

Hence the probability that a transaction can be completed in less than 100 milliseconds if 30% of transactions are changes is 0.718

The overall probability that any transaction can be completed in less than 100 milliseconds is approximately 76%.

Given the probability that new additions are completed in less than 100 milliseconds is 94% and the changes in data are 20%. Also, we know that only 30% of transactions are changes. We are required to find the overall probability that a transaction can be completed in less than 100 milliseconds. This situation involves a mixed probability, where some transactions are additions (70% of them) and some are changes (30% of them). Therefore, we calculate as follows:

Probability (Transaction < 100 ms) = (0.7 * 0.94) + (0.3 * 0.2)

By calculating the expression above we find the overall probability of a transaction being completed in less than 100 milliseconds to be approximately 0.76 or 76%.

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Answer: Second option is correct.

Step-by-step explanation:

Since we have given that

Cost of each chair be d dollar

Cost of each table be D dollar

Number of chairs = 10

Number of tables = 2

cost of 10 chairs become [tex]10\times d=10d[/tex]

cost of 2 tables become [tex]2\times D=2D[/tex]

So, the total cost of chairs and tables would be

[tex]10d+2D=Total\ cost[/tex]

Hence, Second option is correct.

Answer:

The function a (t) is a vector function composed of the component functions [tex]a_ {1} (t) = cost, a_ {2} (t) = sin2t[/tex] and [tex]a_ {3} (t) = cos2t[/tex]. How [tex]a_ {1} (t), a_ {2} (t), a_ {3} (t)[/tex] are infinitely derivable functions in R, so they are regular functions in R.

Now, for[tex]t = 0[/tex], you have to [tex]a (0) = (cos (0), sin2 (0), cos2 (0)) = (1, 0, 1)[/tex]. How the functions [tex]a_ {1} (t), a_ {2} (t), a_ {3} (t)[/tex] are periodic functions with period [tex]2 \pi,[/tex] the vector function [tex]a (t)[/tex] will take the same point [tex](1, 0 , 1)[/tex] at [tex]t = 2n\pi, n = 0, 1, 2, 3, ...[/tex] then the vector function is auto-intercepted

Step-by-step explanation:

Answer:

a person should consume 1340 calories after eating ice cream

Step-by-step explanation:

Given :

The worst treat tested by the group was 1,910 total calories.

People need roughly 3,100 to 3,400 calories per day.

To Find : Using a daily average, how many additional calories should a person consume after eating ice cream?

Solution:

People need roughly 3,100 to 3,400 calories per day.

So, Average = [tex]\frac{3100+3400}{2}[/tex]

Average = [tex]3250[/tex]

So, one should take 3250 calories daily

The worst treat tested by the group was 1,910 total calories.

So, additional calories should a person consume after eating ice cream :

= 3250-1910

= 1340

Hence a person should consume 1340 calories after eating ice cream

Answer:

7 is both a factor and a multiple

7 is the factor of 14 and 7 has 14 as its multiple.

A factor is a number that completely divides another number. To put it another way, if adding two whole numbers results in a product, then the numbers we are adding are factors of the product because the product is divisible by them.

Given:

We have the Number 14.

So, the factors of 14 = 1, 2, 7, 14.

and, 7 can act as factor of 14.

also, 7 has multiple 14.

Hence, 7 is the required number.

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Answer:

See step-by-step explanation below

Step-by-step explanation:

This problem is solved using the Euclidean algorithm; to prove that the integers 8n + 3 and 5n + 2 are relative prime we have to prove that:

gcd(8n + 3, 5n + 2) = 1

gcd (8n + 3, 5n + 2) = gcd (3n + 1, 5n + 2) = gcd (3n + 1, 2n + 1) = gcd(n, 2n + 1) = gcd(n,1) = 1

⇒gcd(8n + 3, 5n + 2) = 1

The integers 8n + 3 and 5n + 2 are relatively prime because their GCD is 1, as shown through the Euclidean algorithm. To compute the multipliers for the inverse of one number with respect to the other, one can backtrack through the Euclidean algorithm stages.

To prove that the integers 8n + 3 and 5n + 2 are relatively prime for any positive integer n, we need to show that their greatest common divisor (GCD) is 1. We can use the Euclidean algorithm to find the GCD of two numbers:

Let's say a = 8n + 3 and b = 5n + 2.

We compute a - b, which is [tex](8n + 3) - (5n + 2) = 3n + 1.[/tex]

Now we find the GCD of b and (a - b), which is GCD(5n + 2, 3n + 1).

Repeating the process, we have [tex](5n + 2) - (3n + 1) \times int((5n + 2) / (3n + 1)) = (5n + 2) - (3n + 1) \times 1 = 2n + 1.[/tex]

The GCD of (3n + 1) and (2n + 1) must now be found.

Continuing similarly, we eventually arrive at a difference of 1, demonstrating that the original two numbers are indeed relatively prime.

To find the multipliers for the inverse of one number with respect to the other, we can backtrack through the Euclidean algorithm steps, expressing each remainder as a linear combination of the two original numbers. This process will yield the required multipliers showing the inverse relationship.

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Answer:

The required ratio is 38 : 7

Step-by-step explanation:

Given,

304 calories burned in 56 minutes,

That is, the number of calories burnt in 56 minutes = 304

So, the ratio of the calories burnt and time in minutes  = [tex]\frac{304}{56}[/tex]

∵ HCF(304, 56) = 8,

Thus, the ratio of price of photos and number of photos = [tex]\frac{304\div 8}{56\div 8}[/tex]

= [tex]\frac{38}{7}[/tex]

Answer:  a)  0.1587  b)  0.0618

Step-by-step explanation:

Let x be the random variable that  represents the monthly demand for a product.

Given : The monthly demand for a product is normally distributed with mean = 700 and standard deviation = 200.

i.e. [tex]\mu=700[/tex]   and  [tex]\sigma=200[/tex]

a) Using formula [tex]z=\dfrac{x-\mu}{\sigma}[/tex], the z-value corresponds to x= 900 will be :

[tex]z=\dfrac{900-700}{200}=1[/tex]

Now, by using the standard normal z-table , the probability demand will exceed 900 units in a month :-

[tex]P(z>1)=1-P(z\leq1)=1-0.8413=0.1587[/tex]

Hence, the probability demand will exceed 900 units in a month=0.1587

a) Using formula [tex]z=\dfrac{x-\mu}{\sigma}[/tex], the z-value corresponds to x=  392 will be :

[tex]z=\dfrac{ 392-700}{200}=-1.54[/tex]

Now, by using the standard normal z-table , the probability demand will be less than 392 units in a month :-

[tex]P(z<-1.54)=1-P(z<1.54)=1-0.9382=0.0618[/tex]

Hence, the probability demand will be less than 392 units in a month = 0.0618

The probabilities requested can be found by calculating the z-scores for the given values and then using a standard normal distribution table to locate the associated probability.

To find the probability that the monthly demand for a product will exceed 900 units when the mean demand is 700 units and the standard deviation is 200 units, we need to calculate the z-score and then use the standard normal distribution table.

The z-score is calculated by the formula:

Z = (X - μ) / σ

Where:

Thus, the z-score for 900 units is:

Z = (900 - 700) / 200 = 1

Using standard normal distribution tables or software, we find the probability associated with a z-score of 1.

For the second question, the z-score for 392 units is calculated in the same way:

Z = (392 - 700) / 200 = -1.54

Again, using standard normal distribution tables or software, we find the probability associated with a z-score of -1.54.

It is important to understand that these probabilities represent the area under the curve of the normal distribution from the z-score to the end of one tail.

Here's my step-by-step explanation:

Whenever you see the phrase "a number" in a problem like this, then they want you to use a variable. Let's use n for number and translate from English to Algebraic.

- The product of 2 more than a number and 10 is 36 more than 8 times the number.

- The product of 2 more than n and 10 is 36 more than 8 times n.

- The product of 2 + n and 10 is 36 + 8n.

- (2 + n)(10) is 36 + 8n.

- (2 + n)(10) = 36 + 8n

Let's solve.

(2 + n)(10) = 36 + 8n

20 + 10n = 36 + 8n

10n - 8n = 36 - 20

2n = 16

n = 8

Hope this helps, let me know if I made a mistake or if you have any questions!

In part A, the next two numbers in the pattern are 70 and 700. In part B, the relationship between the terms in the pattern is that each term is 10 times as great as the term to its left.

Part A:

The pattern in part A involves multiplying each number by 10. Starting with 0.007, we multiply it by 10 to get 0.07. Then, we multiply 0.07 by 10 to get 0.7. Next, we multiply 0.7 by 10 to get 7. So, the next two numbers in the pattern are 70 and 700.

Part B:

The relationship between the terms in the pattern above is that each term is 10 times as great as the term to its left. For example, 0.07 is 10 times greater than 0.007, and 0.7 is 10 times greater than 0.07. This pattern continues, with 7 being 10 times greater than 0.7 and so on.

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Answer:

50,000 tablets may be prepared from 30g of colchicine

Step-by-step explanation:

This problem can be solved as a rule of three problem.

In a rule of three problem, the first step is identifying the measures and how they are related, if their relationship is direct of inverse.

When the relationship between the measures is direct, as the value of one measure increases, the value of the other measure is going to increase too.

When the relationship between the measures is inverse, as the value of one measure increases, the value of the other measure will decrease.

Unit conversion problems, like this one, is an example of a direct relationship between measures.

First Step:

The first step is knowing how many g are in a tablet.

Each gram has 1,000,000 mcg. So:

1g - 1,000,000 mcg

xg - 600 mcg

1,000,000x = 600

[tex]x = \frac{600}{1,000,000} = 0.0006[/tex]

Each tablet has 0.0006g

Final step:

How many tablets may be prepared from 30g of colchicine?

1 tablet - 0.0006g

x tablets - 30g

0.0006x = 30

[tex]x = \frac{30}{0.0006}[/tex]

x = 50,000

50,000 tablets may be prepared from 30g of colchicine

Answer: There are 2 strokes below par that the team has scored in the first round.

Step-by-step explanation:

Since we have given that

Scores of a team

69, 73, 70 and 74

on the first round on a part 72 course.

Now, we need to find the number of strokes above or below the par.

So, we will compare all the scores with 72.

So,

69-72 = -3(below par)

73-72 = 1 (above par)

70-72= - 2 (below par)

74-72 = 2 ( above par)

So, Number of strokes above or below par is given by

[tex]-3+1-2+2\\\\=-2[/tex]

Hence, there are 2 strokes below par that the team has scored in the first round.

Answer:

The sum of the whole numbers from 1 to 720 is 259560.

Step-by-step explanation:

To find : The sum of the whole numbers from 1 to 720 ?

Solution :

The whole numbers from 1 to 720 form an arithmetic progression,

The first term is a=1

The last term is l=720

The number of terms n=720

The sum formula of A.P is

[tex]S_n=\frac{n}{2}[a+l][/tex]

Substitute the values in the formula,

[tex]S_{720}=\frac{720}{2}[1+720][/tex]

[tex]S_{720}=360\times 721[/tex]

[tex]S_{720}=259560[/tex]

Therefore, The sum of the whole numbers from 1 to 720 is 259560.

Answer:

The Order of Magnitude is 1

Step-by-step explanation:

If

N=a*10^{b}

b is the order of magnitude

Total length = 6 * 8 feet= 48 feet=4.8*10^1 feet

Answer:

The order of magnitude of length is 2.

Step-by-step explanation:

Since we are given the total number of cars is 6 and the length of each car is 8 feet hence the length of 6 cars equals

[tex]Length=6\times 8=48[/tex]

Now by definition of order of magnitude we know it is the smallest power of 10 by which a number can be represented.

Mathematically order of magnitude of 'N' is given by 'b'

[tex]N=a\times 10^{b}\\\\with\\\\\frac{\sqrt{10}}{10}\leq a<\sqrt{10}[/tex]

Hence we can write

[tex]48=0.48\times 10^{2}[/tex]

Since the power of 10 is 2 hence the order of magnitude of 48 feet is 2.

Answer:

  12

Step-by-step explanation:

144 = 12×12 = 12×(1 dozen) = 12 dozen

A gross is equal to 144 items. So, if you have a gross of eggs, you would have 12 dozen eggs.

A gross is equal to 144 items. Since there are 12 items in a dozen, to find how many dozen eggs you have in a gross, you divide 144 by 12. This gives you a total of 12 dozen eggs.

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Answer:

Her weight is increase by 18 lbs over past five years and the slope is 3.6 lbs per year.

Step-by-step explanation:

Given information: Estelle weight is

At age 16 =  110 lbs

At age 21 = 128 ibs

Increase in her weight over the past 5 years is the difference of weight at age 21 and at age 16.

Increase in her weight over the past 5 years = 128 - 110 = 18

Her weight is increase by 18 lbs over past five years.

Let x=age and y=weight, then the weight function passes through the points (16,110) and (21,128).

If a line passes through two points [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex],  then the slope of the line is

[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

Using the above formula we get

[tex]m=\frac{128-110}{21-16}[/tex]

[tex]m=\frac{18}{5}[/tex]

[tex]m=3.6[/tex]

Therefore the slope is 3.6 lbs per year.