The simultaneous equations mx + ny = 8 and m²x-n²y = - 10 has a solution x = 2 and y = 3. Find the possible values of the constants m and n.​

Answers

Answer 1

The possible values of (m,n) are (1,2) and (-17,14).

What is a system of equations?

A system having more than two equations is known as a system of equations.

Given that, the solution of the simultaneous equations is x = 2 and y = 3.

The given equations are:

mx + ny = 8

m²x - n²y = -10

Substitute x = 2 and y = 3 into the above equations:

2m + 3n= 8       (1)

2m² - 3n² = -10     (2)

Rewrite equation (1):

2m + 3n= 8

2m = 8 - 3n

m = (8 - 3n)/2          (3)

Substitute it into equation (2):

[tex]2\frac{(8-3n)^2}{4}-3n^2 = -10\\\\2(64 +9n^2-48n)-12n^2+40 =0\\\\128 +18n^2-96n-12n^2+40=0\\\\6n^2-96n+168=0\\\\n^2-16n+28=0\\\\n^2-14n-2n+28=0\\\\n(n-14)-2(n-14)=0\\\\(n-2)(n-14)=0[/tex]

n = 2 or n =14

Now, substitute n = 2 into equation (3):

m = (8-3×2)/2

m = 1

Further, substitute n = 14 into equation (3):

m = (8-3×14)/2

m = -17

Hence, the possible values of (m,n) are (1,2) and (-17,14).

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Related Questions

Which of the following is equal to √√√√5? (4 points)
O
O
O
O
53
1
56
2
53
3
N/W
52

Answers

Answer:

b

Step-by-step explanation:

A school is arranging a field trip to the zoo. The school spends 778.72 dollars on passes for 29 students and 2 teachers. The school also spends 259.26 dollars on lunch for just the students. How much money was spent on a pass and lunch for each student?

Answers

Answer:

Step-by-step explanation:

first, you have to divide the total cost of the passes by the number of teachers and students combined. Then you must multiply the individual cost of the pass by the number of students. Finally, you have to take the total cost for student passes and add it to the cost of the lunches, then you answer.

the franchisee estimates that customers will not wait in line more than five minutes for a car wash. a longer time will cause robot to lose the gasoline sales as well as th car wash sale. if the estimate of customer arrivals is 10 per hour, which wash unit should be selected?

Answers

Using unit I, calculate the average waiting time of customers in the wash line (μ for unit I = 12 per unit).

For unit II at 15 per hour

if waiting time is the only criterion, unit II should be purchased. But before we make the final decision, we must look at the profit differential between both units.

With unit I, some customers would balk and renege because of the 5 minute wait. And, although this greatly complicates the mathematical analysis, we can gain some estimate of lost sales with unit I by increasing Wq = 5 minutes and solving for λ. This would be the effective arrival rate of customers.

Therefore, because the original estimate of λ was 10 per hour, an estimated 2 customers per hour will be lost.

Lost profit of 2 costumers per hour × 14 hours × 1/2 ($0.70 fill-up profit + $0.40 wash profit) = $15.40 per day.

Because the additional cost pf unit II over unit I is only $4 per day, the loss of $15.40 profit obviously warrants installing unit II.

The original five-minute maximum wait constraint is satisfied by unit II.

Therefore, unit III is not considered unless the arrival rate is expected to increase.

Given question is incomplete.

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find the value of m n (4x-33) (3x+30)

Answers

Answer: 4(x + y) = 4x + 4y 2(3x + 4) = 2(3x) + 2(4) = 6x + 8

Step-by-step explanation:

a car is purchased for . each year it loses of its value. after how many years will the car be worth or less? (use the calculator provided if necessary.)

Answers

Answer: I calculated the value after 5 years to be 5,734.40 or 5,734

Step-by-step explanation:

A machine is used to fill several bags each of 20-ounces of spicey
chips. After each bag is filled, another machine weighs them. If the
bag weighs .25 less or more than the desired weight, the bag is
rejected. Write an equation to represent the maximum weight for a
bag of chips that the machine will approve.

Answers

Answer: 19.75oz < x > 20.25oz

Step-by-step explanation: let x represent the weight of the bag of chips.

This equation states that the. weight must not exceed 20.25 but it must not be below 19.75oz.

Answer: 19.75oz < x > 20.25oz

Step-by-step explanation:

Last year, Pinwheel Industries introduced a new toy. It cost $2500 to develop the toy and S25 to manufacture each toy. Fill in the blanks below as appropriate.
A.) Give a linear equation in the form Cmn + b that gives the total cost, C, to produce n of these toys Preview
B.) The total cost to produce n 3000 toys is S
C.) With $32500, a total of toys can be produced.

Answers

Equation is C=25n + 2500 And The total cost to produce 3000 toys is $77,500 And With $32500, a total of 1200 toys can be produced

A linear equation is what, exactly?

An algebraic equation with only a constant and a first-order (linear) term, such as y=mx+b, where m is the slope and b is the y-intercept, is known as a linear equation.

A) Lets have linear equation y=mx+b,

C (total cost) = y and n (number of toys) =x.

The original development cost plus the production cost of each toy would equal the overall cost of creating n toys.

Because m is multiplied by n, the number of toys, the cost to produce a toy will equal m.

Due to the fact that b is a constant and its value is unaffected by the quantity of toys, it will always equal the development cost.

Therefore, C=25n + 2500

B) by above, equation put n=1750

C= 25(3000) + 2500

C= $77,500

C) Now, again by same equation, but C instead of n.

=> 32500= 25n +2500

=> 30000=25n

=> n = 1200

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What is the equation in slope-intercept form of the line that passes through the point (8, - 7) and is parallel to the line represented by y = 6x + 2

A. Y=1/6x+55
B. Y=1/6x-55
C. Y=6x+55
D. Y=6x-55

Answers

Answer:

:Equation of line is[tex]y=1.2x+3.8[/tex]To find:The equation of line that passes through the point (5, 0) and parallel to the given line.

Step-by-step explanation:

Please help ! Need to know what the answer is solve while using the Pythagorean theorem !

Answers

Answer:

y ≈ 16.12452

Step-by-step explanation:

Pythagorean theorem = a² + b² = c²

In this example, 14 = a, 8 = b, and y = c

14² = 196, 8² = 64

196 + 64 = 260 = y²

y² = [tex]\sqrt{260}[/tex] ≈ 16.12452

is it possible for two quantities to (a) have the same units but different dimensions or (b) have the same dimensions but different units? explain.

Answers

If two quantities have same units, they will be comprised of the same basic physical quantities and hence their dimensions will be same. Same dimensions do not represent the same physical quantity. For example, The kinetic energy and the potential energy are measured in the same units but they possess different physical quantities.

What is dimensions?

The minimal set of coordinates required to specify any point within a mathematical space is known as the dimension of the space in physics and mathematics. As a result, a line has a dimension of one because a point on it can be specified by a single coordinate, such as the point at 5 on a number line.

Two quantities with the same units will be made up of the same fundamental physical quantities, resulting in identical dimensions. The same physical quantity does not have the same dimensions. For instance, although having different physical properties, kinetic energy and potential energy are measured in the same units.

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Who were the Greek oligarchs?

Answers

Answer:

"Broadly speaking, an oligarchy is a form of government characterized by the rule of a few persons or families. More specifically, the term was used by Greek philosopher Aristotle in contrast to aristocracy, which was another term to describe rule by a privileged few."

Step-by-step explanation: I hope this helps with something

A computer chess game and a human chess champion are evenly matched. They play fourteen games. Find probabilities for the following events.
(Round all answers to four decimal places.)
(a) They each win seven games. P =
(b) The human chess champion wins eleven games. P =
(c) The computer wins at least eleven games. P =

Answers

The probability that they each win six games is 0.225.  

Given : A computer chess game and a human chess champion are evenly matched. They play twelve games.

To find : The probability that they each win six games?

Applying binomial distribution,

Here n=12 and p=0.5

(a) They each win seven games. P =

[tex]P(X=k)=\frac{n !}{k !(n-k) !} \times p^k \times(1-p)^{n-k}[/tex]

The probability that they each win six games is k=6.

(b) The human chess champion wins eleven games. P =

[tex]\begin{aligned}& P(X=6)=\frac{12 !}{6 !(12-6) !} \times 0.5^6 \times(1-0.5)^{12-6} \\& P(X=6)=\frac{12 \times 11 \times 10 \times 9 \times 8 \times 7 \times 6 !}{6 \times 5 \times 4 \times 3 \times 2 \times 6 !} \times 0.015625 \times 0.015625 \\& P(X=6)=11 \times 2 \times 3 \times 2 \times 7 \times 0.015625 \times 0.015625 \\& P(X=6)=0.225\end{aligned}[/tex]

(c) The computer wins at least eleven games. P =

Therefore, The probability that they each win six games is 0.225.

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t would be appropriate to use a distribution to simulate customer arrival times at a bank or restaurant. a. exponential b. normal c. poisson d. weibull e. uniform

Answers

t-distribution in the bank or restaurant to get the customer arrival time is a b) normal distribution.

The t-distribution is defined by degrees of freedom. These are related to sample size. The t distribution is most useful when the sample size is small, the population standard deviation is unknown, or both. As the sample size increases, the t-distribution will become more normal.

The t distribution is the continuous probability distribution of z scores when the estimated standard deviation is used in the denominator instead of the true standard deviation. The purpose of the t-test is to compare a specific characteristic that describes the groups, and the means will be representative of the populations that are normally distributed.

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A final exam in Math 160 has a mean of 73 with standard deviation 7.8. If 24 students are randomly selected, find the probability that the mean of their test scores is greater than 78. A) 0.0103 B) 0.0008 C) 0.8962 D) 0.0036

Answers

The correct answer is b that is the probability that the mean of their test scores is greater than 78 is 0.0008.

What is Probability?

The field of mathematics known as probability deals with numerical representations of the likelihood that an event will occur or that a statement is true. An event's probability is a number that lies between 0 and 1, where, roughly speaking, 0 denotes the event's impossibility and 1 denotes certainty. The probability is calculated on dividing the total number of possible outcomes by the number of possible ways the event could occur. Probability and odds are two distinct ideas where odds are calculated by dividing the likelihood of an event by the likelihood that it won't.

mean, μ = 73
standard deviation σ =7.8

η = 24

P (X*=78)

P( Z>3.1403)

Hence, the probability that the mean of their test scores is greater than 78 is 0.0008.

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How do you write as a percentage?
39
100

Answers

The percentage of 39/100 can be written as 39% as given in the question.

What is meant by percentage?

A percentage is a figure or ratio stated as a fraction of 100. The abbreviations "pct.", "pct," and "pct" are also used. A% is a dimensionless (pure) number with no unit of measurement.

The word "percent" comes from the Latin per centum, which means "hundred" or "by the hundredth." The symbol for "percent" emerged gradually from the Italian expression per cento. The "cento" symbol was developed from two circles divided by a horizontal line.

As money denominations expanded in the Middle Ages, computations with a denominator of 100 were increasingly prevalent, to the point where it became normal for mathematics texts to incorporate such computations from the late 15th to the early 16th centuries

We write 39/100 in the percentage as 39%

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Use the slope formula to determine the slope of a line that passes through the points (-5,-3) and (9,-10)

Answers

Answer:

-1/2

Step-by-step explanation:

y2-y1/x2-x1

-10-(-3)/9-(-5)=-7/14=-1/2

He brightness of some stars can fluctuate over time. Suppose that the brightness of a certain star can be modeled by the following: B(t) = 7. 8 + 10. 8sin((2pi/63)t) In this equation, B(t) represents the magnitude of brightness, and t is the time (in days). Suppose we start at t = 0 days. During the first 63 days, when will the star's magnitude of brightness be 13? Do not round any intermediate computations, and round your answer(s) to the nearest day. Please especially explain the portion when calculating arcsin - thanks!

Answers

The  days needed are 5 days

What is the rate of decay?

The reduction in radioactive nuclei per unit of time is the rate of decay, or activity, of a sample of a radioactive substance.

How is the decay rate calculated?

The rate of change is determined by the equation dN/dt = N, where is the decay constant, assuming N is the size of a population of radioactive atoms at a given time t and dN is the amount by which the population decreases in time dt.

What is the decay factor?

Exponential decay is the opposite of exponential growth; it has a constant multiplier that is less than 1 when a quantity decreases by the same amount over equal intervals of time. This quantity also referred to as the decay factor, can be written as (1-r).

From the above question

B= 7.8+10.8sin((2pi/63)t)

B=13=7.8+10.8 sin((2pi/63)t)

sin((2pi/63)t)=13/27

(2pi/63)t=sin(13/27)=0.502344 radians

t=5 days

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The edges of three squares are joined together to form a right triangle with legs of lengths r and s and a hypotenuse of length t . what must be true

Answers

For the triangle to be true, the square of the hypothenuse is equal to sum of the square of the leg and the sum of the angles is equal to 180 degrees

Pythagoras Theorem

The Pythagoras theorem states that if a triangle is right-angled (90 degrees), then the square of the hypotenuse is equal to the sum of the squares of the other two sides. Observe the following triangle ABC, in which we have BC² = AB² + AC2​². Here, ​​​​AB is the base, AC is the altitude (height), and BC is the hypotenuse. It is to be noted that the hypotenuse is the longest side of a right-angled triangle.

In this case, for the triangle to be true,

1. The sum of square of two sides (s) and (r) must be equal to the square of t

t² = s² + r²

2. The sum of angles in the right angle triangle must be equal to 180 degrees

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5. A retail store selling soaps, lotions, and candles must ship products to each of their locations. Each shipping box must contain 40 items and weigh exactly 25 pounds (400 ounces) Each body spray weighs 8 ounces and each shower gel weighs 12 ounces. The graph shows a system of equations for this scenario where z is the number of body sprays and is the number of shower gels in one shipping package In parts a-d determine which point(s) best match each description

Answers

The solution of the system of equations is given as follows:

x = 20 -> 20 body sprays.y = 20 -> 20 shower gels.

How to obtain the amounts with the system of equations?


The variables of the system of equations are given as follows:

Variable x: number of body sprays in the box.Variable y: number of shower gels in the box.

Each shipping box must contain 40 items, hence:

x + y = 40.

The box weighs 400 ounces, hence, considering the weight of each item, we have that:

8x + 12y = 400.

From the first equation, we have that:

x = 40 - y.

Then the number of shower gels is obtained as follows:

8(40 - y) + 12y = 400

4y = 80

y = 80/4

y = 20.

The number of body sprays is of:

x = 40 - 20 = 20.

Missing Information

The problem is incomplete, hence we build and solve the equations, which will help you obtain the other information.

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describe the center and spread of the data using either the mean and standard deviation or median and iqr. describe how you determined which one to use.

Answers

For symmetric distributions without outliers, the mean should be used to get the measure of center.

What are the Center and Spread of the data?

The spread in the data measures how far the numbers in the data set are away from the mean and the center in the data measures the standard deviation.

To determine the measure of center for symmetric distributions without outliers, one should use the mean. They should use the median to determine the measure of center in all other situations. The range is a suitable metric for determining the spread of a distribution.

However, the interquartile range should be used when using the median as the measure of center, and the standard deviation should be used when using the mean as the measure of center.

Hence, For symmetric distributions without outliers, the mean should be used to get the measure of center.

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Response time is an important statistic for measuring the effectiveness of a fire department, and is measured as the difference between the time a fire house receives a call and the time the first piece of fire equipment leaves the station. The response times for fire departments in a large city are found to have an approximately Normal distribution, with a mean of 4.5 minutes and a standard deviation of 1.2 minutes. What percentage of fire station response times are between 4 and 6 minutes?
37.7%
44.3%
55.7%
62.3%

Answers

Step-by-step explanation:

55.7% of fire station response times are between 4 and 6 minutes. This can be calculated using the z-score formula, which is (x-μ)/σ, where x is the value of interest (in this case, 4 and 6 minutes), μ is the mean (4.5 minutes), and σ is the standard deviation (1.2 minutes). The z-score for 4 minutes is -0.42 and the z-score for 6 minutes is 0.42. Using a standard


Amira is solving the equation x2 - 6x - 1. Which value must be added to both sides of the equation to make the left side a perfect-square trinomial?

Answers

The answer is 9. You would use the equation b/2 squared. Hope this helped. Sorry if i am wrong

In cell I5, insert the AVERAGEIFS function to calculate the average SAT score that meets two conditions: Scores in the range I11:I67 are greater than or equal to 3500 and Final Decisions in the range J11:J67 are Early Admissions (cell E3). Use mixed references appropriately.

Answers

The term in cell I5 will be for the AVERAGEIFS function:

AVERAGEIF( I11:I67 ,"<3500",J11:J67 ,"E3")

For the given question the termed   AVERAGEIFS  is the function formula in excel which returns the average of all the cells available in the sheet in a range that meets a given condition.the syntax for the term is  AVERAGEIF(range, criteria, [average_range]),  where the range is  Required like  One or more cells to get the average. Criteria os the basically the form of an expression, number, or cell reference, and at last the average range is optional it is just the set of cells to average.

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Which of these relations is a function?

Answers

By using the vertical line test we will see that the relation that is a function is the one in the top left graph.

Which of these relations is a function?

Here we ave the graphs of some relations, and we want to see which one of these represents a function.

To check that, we need to do the vertical line test.

The test says that if we draw a vertical line on the coordinate axis, and that line intercepts the graph of the relation more than one time, then the relation is not a function.

With that test we can see that the only relation that is a function is the one in the top left graph, is the only one that passes the vertical line test.

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What’s y=-3(x-1)2 squared +3 in factored form

Answers

Answer: y=−16.309691adqrsux+16.309691adqrsu+3

Let's solve for y.

y=((((((((−3(x−1))(2))(s))(q))(u))(a))(r))(2.718282))(d)+3

This is the best I could come up with

A certain statistic dˆ is being used to estimate a population parameter d. The expected value of dˆ is not equal to d. What property does dˆ exhibit?.

Answers

The statistic's bias is a quality that the statistic does not display, according to the Central Limit Theorem for proportions.

Central limit theorem:

According to the central limit theorem in statistics, samples will be normally distributed and their means will be roughly equal to those of the entire population when the big sample size has a finite variance.

Given,

A certain statistic The population parameter d is being estimated using the function d. D's predicted value is not the same as D.

Find the property that does d display in this case.

According to the Central Limit Theorem, the following is true for a proportion p in an n-person sample:

Value anticipated, μ = p

Standard deviation: s = √p(1 - p) /n

Therefore,

The statistic is biased because the expected value in this case differs from the expected.

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in 2006, 68.1 million people subscribed to cable television. in 2013, that number had decreased to 57.1 million. find the percent decrease in the number of cable tv subscribers from 2006 to 2013.

Answers

The percent decrease in the number of cable TV subscribers from 2006 to 2013 is 17.92%.

In the given question, in 2006, 68.1 million people subscribed to cable television. in 2013, that number had decreased to 57.1 million.

We have to find the percent decrease in the number of cable TV subscribers from 2006 to 2013.

The number of subscriber in 2006 is 68.1 million.

The number of subscriber in 2013 is 57.1 million.

Then the percent decrease in the number of cable tv subscribers from 2006 to 2013 is

Percent decrease in the number of cable TV subscribers = (subscriber in 2006 - subscriber in 2006)/subscriber in 2006 *100

Percent decrease in the number of cable TV subscribers = (61.4-50.4)/61.4 *100

Percent decrease in the number of cable TV subscribers = 11/61.4 *100

Percent decrease in the number of cable TV subscribers = 0.1792*100

Percent decrease in the number of cable TV subscribers = 17.92%

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please solve this quadratic inequality:
x^2+10x+16>-5

Answers

Answer: x<-7 or x>-3

Step-by-step explanation: Tell me if its wrong ill fix it

answer:

x>-7, x>-3

step-by-step explanation:

- the first step would to be to add five to both sides: x^2+10x+21>0

- then you can solve be grouping which results in: (x+7)(x+3)>0

- the final answer will be: x>-7, x>-3

hope that helps!

The angles of a triangle add up to 180 degrees. The second angle is 6 degrees larger than the smallest angle. The third angle is 4 times as big as the smallest angle. Find the measure of the smallest angle (in degrees) degrees

Answers

Let the first angle be y
y+(y+6)+(yx4)=180
y+y+4y+6=180
6y+6=180
6y=174
y=29

The first angle is 29
The second angle is 35
The third angle is 116

Hope this helps

help me i actually cant figure this out :(

Answers

To complete the square of the quadratic function x² + 10x + 4 we need to add 21

Completing The Square

Completing the square is a method in algebra that is used to write a quadratic expression in a way such that it contains the perfect square. In simple words, we can say that completing the square is a process where consider a quadratic equation of the ax² + bx + c = 0 and change it to write it in the form a(x + p)² + q = 0. This method is generally used to find the roots of a quadratic equation.

Completing the square formula is a technique or method to convert a quadratic polynomial or equation into a perfect square with some additional constant. A quadratic expression in variable x: ax² + bx + c, where a, b and c are any real numbers but a ≠ 0, can be converted into a perfect square with some additional constant by using completing the square formula or technique

The equation given is

x² + 10x + 4 = 0

Take 4 to right side

x² + 10x = -4

rewrite in (x + a)² = b form

(x + 5)² = 21

x + 5 = ±√21

x = √21 - 5

x = -√21 - 5

To complete the square, we need to add 21

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russell has been suffering from the symptoms of a major depressive episode for the past three weeks, and his symptoms have included both hallucinations and delusions. which specifier would be added to his diagnosis of a major depressive episode? question 5 options: 1) psychotic features 2) seasonal pattern 3) perinatal onset 4) rapid cycling are where student drinking rates tend to be highest. a.dormitories b.on-campus apartments c.off-campus apartments d.fraternity and sorority houses e.locker rooms diabetes and insulin signaling by kristy j wilson why does it make sense that mias grandfather may be more fatigued than a non diabetic The following inequalities form a system. y is greater than or equal to two-thirds times x plus 1 y is less than negative one-fourth times x plus 2 Which ordered pair is included in the solution to this system? (6, 3.5) (6, 3) (4, 3) (4, 4) some economists argue that well-functioning capital markets that allow funds to move from those who have but do not need funds to those who need but do not have funds, are essential for rapid economic growth. well-functioning capital markets are an example of: Homeowners insurance costs are ______ in states that are more susceptible to hurricanes, floods or tornadoes. Which image shows the type of leukocyte responsible for antibody production? The crusades increase in learning and cultural diffusion what is the social constructionist view of crime as it relates to the recreation of marijuana in new york with a theory of individual-level criminality. a client with aids is admitted to the hospital with severe diarrhea and dehydration. the physician suspects an infection with cryptosporidium. what type of specimen should be collected to confirm this diagnosis? QuestionEvaluate the expression when b=9 .24/b+8 = samantha is considering job offers from two companies. company a offered her a starting salary of $48,000 with a $2100 raise at the end of each year. company b offered her a starting salary of $48,000 with a 3.7% raise at the end of each year.Let f(t) represent Rosa's salary at Company A, t years after accepting a position at Company A, and let g(t) represent Rosa's salary at Company B t years after accepting a position at Company B.Complete the table of values below:t f(t) g(t)0 50000 50000123 198. the adaptation of muscular endurance generally requires how much rest between sets of exercise? which of the following is true about a null attribute? group of answer choices if the column is not null, entering the data for that field is optional if the column is null, entering the data for that field is required. it indicates whether or not the value of the column can be null. a primary key can be null a student prepared a graph of the results from an experiment where no(g) was added in small increments to a measuring tube containing oxygen gas. the student plotted the total volume of gas in the measuring tube as the dependent variable on the y axis and the total volume of no(g) as the independent variable along the x axis. all volumes were measured and plotted in milliliters of the respective gas. the plot shows a linear trend with a negative slope. select the statement that gives the best interpretation of the negative slope observed in this experiment.As NO(g) is added the volume of NO(g) is increasing.As NO(g) is added the volume of oxygen in the measuring tube is decreasing.The volume of NO(g) is increasing.The volume of oxygen in the measuring tube is decreasing. For SN1 solvolysis of t-butyl chloride, rank the solvents from fastest reaction to slowest reaction.acetone, ethanol, methanol, water, formic acid, and acetic acid what is a pcv? what does pcv stand for? what is another name for pcv? describe the procedure for obtaining a pcv. how can a call center facility manager help manage the business continuity risk associated with weak, infrequent earthquakes? Franklin roosevelt won the election because he had some success in new york. What did he do?. an oncology clinic nurse is reinforcing prevention measures for oropharyngeal infections to a client receiving chemotherapy. which statement by the client indicates that teaching was successful?