What is the answer to The sum of 2 numbers is 19 and their difference is 3? And thank you brainly for helping. I need the answers correct because I play prodigy, a math game. Thank you!

Answer:

2) $1797

3) $152

4) $5,378

In order to determine if a function is linear or exponential, you can observe the relationship between the function's input and output values.

For a linear function, the output values increase or decrease at a constant rate as the input values change. In other words, the function has a constant slope when graphed. You can check linearity by calculating the differences between consecutive output values and verifying if they remain the same. If the differences are constant, the function is linear.

On the other hand, an exponential function shows a constant ratio between the output values and the input values. This means that as the input values increase or decrease by a constant factor, the output values also increase or decrease by the same factor. You can check for exponential behavior by calculating the ratio between consecutive output values. If the ratios are constant, the function is exponential.

It is important to graph the function and analyze its behavior over a range of input values to confirm whether it is linear or exponential.

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Answer:

yes it is an equilateral triangle

Answer: 2520 groups

Step-by-step explanation:

To calculate the number of groups that can be chosen with four SE students and three CPRE students, we need to consider the number of ways to select the students from each group separately.

The number of ways to choose four SE students from the nine available is given by the combination formula, denoted as "9 choose 4" or C(9, 4), and can be calculated as:

C(9, 4) = 9! / (4! * (9 - 4)!) = 9! / (4! * 5!) = (9 * 8 * 7 * 6) / (4 * 3 * 2 * 1) = 126

Similarly, the number of ways to choose three CPRE students from the six available is:

C(6, 3) = 6! / (3! * (6 - 3)!) = 6! / (3! * 3!) = (6 * 5 * 4) / (3 * 2 * 1) = 20

To determine the total number of groups, we multiply the number of choices for SE students and CPRE students:

Total number of groups = C(9, 4) * C(6, 3) = 126 * 20 = 2520

Therefore, there are 2520 different groups of seven students that can be chosen, consisting of four SE students and three CPRE students.

Answer:

t > 5

Step-by-step explanation:

Step-by-step explanation:

350 - 25 = 325

325 / 65 = 5

It said to reach over 350 miles, so it’s greater than 5

t > 5

The standard deviation is a statistical measure that provides information on the spread or dispersion of data around the mean value. It is calculated as the square root of the variance and is usually expressed in the same units as the data. The standard deviation helps to evaluate the consistency and range of a data set in the following three ways.

Firstly, the standard deviation reflects the degree of variation or diversity in the data. A higher standard deviation indicates that the data points are more spread out and diverse, while a lower standard deviation implies that the data points are more clustered and consistent. For instance, if we compare two data sets with the same mean value but different standard deviations, we can say that the one with the higher standard deviation has a wider range and more variable values.

Secondly, the standard deviation can be used to identify outliers or extreme values in the data set. Outliers are data points that lie far away from the mean and can affect the overall analysis or conclusions drawn from the data. By calculating the standard deviation, we can determine the range within which most of the data points lie and detect any values that fall outside that range.

Thirdly, the standard deviation is essential in hypothesis testing and decision-making based on statistical inference. It helps to assess the significance of differences or similarities between two or more data sets and determine whether they are due to chance or actual differences in the underlying populations. The standard deviation serves as a basis for calculating confidence intervals, z-scores, and p-values, which are used to test hypotheses and draw conclusions.

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Answer:

x + y ≤20

6.5x + 8y ≥84

Step-by-step explanation:

Doing 5 hours of tutoring and 8 hours of working as a coffee shop barista is not a viable combination..

The relative minimum in the interval 0 ≤ x ≤ π is the lowest point on the graph within that range. To find the relative minimum, we need to determine where the derivative of the function changes from negative to positive.

First, take the derivative of the function. Then, set it equal to zero to find the critical points. Next, test the critical points and endpoints of the interval by plugging them into the original function.  If the value of the function at a critical point or endpoint is lower than the values of the function at the neighboring points, then it is a relative minimum.

Finally, determine the x-coordinate of the relative minimum by finding the critical point or endpoint that corresponds to the lowest value of the function. .

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hope its help full thank u❤️❤️❤️

Putting $20,000 at 8% annual interest & monthly getting compounded , the amount of money that jerry will after 10 years is approximately $44,040.

Given :

present value (P) = $20,000

interest rate (r) = 8%

compounding monthly (n) = 12

Time (t) = 10 years

To find : Future value after 10 years when interest monthly gets compounded

Now,

we know the formula is

future value = present value × (1 + interest rate)^years

                    = P × ( 1 + r / n )^ nt

inserting values in the given formula we get,

future value    = $20,000 × ( 1 + 8% / 12 )^ 10 × 12

                       =  $20,000 × ( 1 + 8 / 1200 )^ 120

                       =  $20,000 × (1 + 0.0066)^120

                       =  $20,000 × ( 1.0066)^120

                       =  $20,000 × 2.2020

                       =    $44,040

Hence the amount saved by jerry after 10 years at the annual interest of 8%  when money monthly is getting compounded with $20.000 will be $44,040.

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The AD curve in an AS-AD diagram is most relevant to Keynes's Law. The correct option is d.

In an AS-AD (Aggregate Supply-Aggregate Demand) diagram, Keynes's Law is most relevant to the AD curve. Keynes's Law, proposed by economist John Maynard Keynes, states that aggregate demand (AD) determines the level of economic activity and that fluctuations in AD can lead to periods of economic expansion or contraction.

The AD curve represents the total demand for goods and services in an economy at different price levels. It shows the relationship between the overall price level and the quantity of real GDP demanded. When the AD curve shifts to the right, it indicates an increase in overall demand, leading to higher levels of output and employment. Conversely, a shift to the left indicates a decrease in overall demand, which may lead to lower output and employment.

Keynes's Law emphasizes the importance of aggregate demand management by the government through fiscal and monetary policies to stabilize the economy and achieve full employment. Thus, the AD curve plays a central role in illustrating the concepts and implications of Keynes's Law in an AS-AD diagram. The correct option is d.

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If they work together, they need 15/8 hours to assemble one shelving unit.

What does work mean in math?

According to tittle, we know worker A can  assemble a shelving unit in 5 hours , which means worker A can finish 1/5 of work in 1 hour . And worker B can finish 1/3 of work in 1 hour.

If A & B work together , they will spend the same time t to assemble only one shelving .

That means,                  1/5t + 1/3 t = 1                         (equation)

1/5 t is worker A's workload during time t , 1/3 t is worker B workload.

So,   1/5 t + 1/3t = 1  is the answer

     ⇒ 5t + 3t = 15

     ⇒ t = 15/8 hours

If they work together, they need 15/8 hours to assemble one shelving unit.

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Answer:

Letter C is the correct answer or  1/5 t + 1/3t = 1

Answer:

4. Think of one major difference in the beliefs of Judaism and Christianity. How could this difference impact the everyday lives of followers of these religions?

Answer:

the answer is C

you have to use horner Division because its so easily to use

just search horner divission in polonium and you will find it

The expression f(x)/g(x) defines function h(x)=3x^2+12x.The answer is C.

We have given that,

\(f(x)=3x^2+9x^2-12x\)

\(g(x)=x-1\)

and,    \(h(x)=3x^2+12x\)

Suppose f(x) and g(x) are function,

\((\frac{f}{g}) (x)=\frac{f(x)}{g(x)}\)

So we have given function us

\(f(x)=3x^2+9x^2-12x\)

\(g(x)=x-1\)

We have divide f(x) by g(x)

\(=\frac{3x^3+9x^2-12x}{x-1}\)

\(=3x\left(x+4\right)\)

\(=3x^2+12x\)

Therefore we get the expression f(x)/g(x) defines function h.

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The rate at which the water level is rising when it is 5 meters high is approximately 0.477 m/min

The volume of a conical tank:
V = (1/3)πr^2h
where V is the volume of the tank, r is the radius, and h is the height.
Differentiating both sides with respect to time, we get:
dV/dt = (1/3)π(2rh dr/dt + r^2 dh/dt)
Where dV/dt is the rate at which the volume is changing (in m^3/min), and dr/dt and dh/dt are the rates at which the radius and height are changing, respectively.
We know that water is pouring into the tank at a rate of 6m^3/min, so we can substitute this value for dV/dt. We also know that the height of the water level is rising, so dh/dt is what we need to find. Finally, we know that when the water level is 5 meters high, the radius of the water surface can be found using similar triangles:
r/h = 4/10
r = (4/10)h = 0.4h
Now we can substitute all of these values into the formula and solve for dh/dt:
6 = (1/3)π(2(0.4h)(dh/dt) + (0.4h)^2 dh/dt)
6 = (1/3)π(0.8h + 0.16h^2) dh/dt
dh/dt = 6 / [(1/3)π(0.8h + 0.16h^2)]
When the water level is 5 meters high, h = 5, so:

dh/dt = 6 / [(1/3)π(0.8(5) + 0.16(5)^2)]

dh/dt = 0.477m/min

Therefore, the rate at which the water level rises when it is 5 meters high is approximately 0.477 m/min.

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The F-ratio is a measure used in statistical tests, specifically in ANOVA (Analysis of Variance) to test for differences between means of multiple groups.

a) On average, what value is expected for the F-ratio if the null hypothesis is true?

The answer is a. 1. If the null hypothesis is true, it means that there is no significant difference between the means of the groups being compared. Under this assumption, the F-ratio is expected to have a value close to 1, as the variance between the groups is not significantly different from the variance within the groups.

b) On average, what value is expected for the F-ratio if the null hypothesis is false?

The answer is d. Much greater than 1.00. If the null hypothesis is false, it means that there is a significant difference between the means of the groups being compared. Under this assumption, the F-ratio is expected to have a value much greater than 1, as the variance between the groups is significantly larger than the variance within the groups.

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There are no such integers. Odd + odd = even, and adding odd to that makes it odd again. But 64 is even.

Put another way, let n be the smallest of the three integers. Then

n + (n + 2) + (n + 4) = 64

3n + 8 = 64

3n = 56

But 3 does not divide 56, so there is no integer solution for n.

Option B is the correct choice

A marine biologist measured the size of each barnacle in twenty 10 by 10 square inch areas that were chosen at random. Cluster sampling is illustrated by this.

For a study that is a population into clusters, such as districts or schools, researchers will divide the population into multiple groups (clusters) and will then randomly select some of these clusters as your sample. Ideally, each cluster should be a miniature reflection of the population as a whole.

In order to determine the average size of the barnacles Semibalanus balconies along a section of rocky shoreline, a marine biologist is conducting this study. To do this, he measured the size of every barnacle in each of the twenty 10 by 10 square inch plots that were randomly chosen. Cluster sampling is illustrated by this. (Option B)

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COMPLETE QUESTION:

A marine biologist wants to estimate the mean size of the barnacle Semibalanus balconies on a stretch of rocky shoreline. To do so, he randomly selected twenty 10 by 10 square inch plots and measured the size of every barnacle in each selected plot. This is an example of  

a. convenience sampling.

b. cluster sampling.

c. stratified random sampling.

d. simple random sampling.

e. voluntary sampling.

In the given Markov chain, State 1 is absorbing, State 4 is periodic, State 1 is recurrent, and States 3, 4, and 5 are recurrent.

A Markov chain is a stochastic model that represents a sequence of states where the probability of transitioning from one state to another depends only on the current state. Let's analyze the given Markov chain to determine the properties of each state.

State 1: This state has a probability of 1 in the first row, indicating that it is an absorbing state. An absorbing state is one from which there is no possibility of leaving once it is reached. Therefore, statement a) is correct, and State 1 is absorbing.

State 2: There are no transitions from State 2 to any other state, which means it is an absorbing state as well. However, since it is not explicitly mentioned in the question, we cannot determine its status based on the given information.

State 3: This state has non-zero probabilities to transition to other states, indicating that it is not absorbing. Furthermore, it has a loop back to itself with a probability of 1/6, making it recurrent. Hence, statements c) and e) are incorrect, while statement f) is correct. State 3 is recurrent.

State 4: State 4 has a transition probability of 1/3 to State 3, which means there is a possibility of leaving this state. However, there are no outgoing transitions from State 4, making it an absorbing state. Moreover, since there is a loop back to itself with a probability of 2/3, it is also recurrent. Therefore, statement b) is correct, and State 4 is periodic and recurrent.

State 5: Similar to State 4, State 5 has a transition probability of 2/3 to State 3 and no outgoing transitions. Hence, State 5 is also an absorbing and recurrent state. Consequently, statement e) is correct.

To summarize, State 1 is absorbing and recurrent, State 4 is periodic and recurrent, and States 3 and 5 are recurrent.

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Answer:

A

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Using the expected value of a discrete distribution, the correct option is given as follows:

E(penny) = 1.75 and E(nickel) = 1.5, so she should play with the pennies.

The expected value of a discrete distribution is given by the sum of each outcome multiplied by it's respective probability.

When 3 coins are tossed, the probabilities are given as follows:

Hence the distribution for the penny points is:

The expected value for the penny points is:

-2 x 0.25 + 3 x 0.75 = 1.75.

When 2 coins are tossed, the probabilities are given as follows:

Hence the distribution for the nickel points is:

The expected value of nickel points is:

E(X) = -2 x 0.5 + 5 x 0.5 = 1.5.

Due to the higher expected value, she should play with the pennies and the third option is correct.

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Answer:

The answer is C

Step-by-step explanation:

edge

Answer:

its 84 dollars sorry I'm late

Step-by-step explanation: Make a proportional relationship.

make 120% into a fraction. 120/100

then make 70 into a fraction using a variable. For example, x/70

Then cross multiply 120 and 70. 120x70=8,400

Last divide 8,400 by 100 and that equals $84.

Hope this helps!

Im not 100% sure but I THINK its 2/3.

Answer:

2/-3

Step-by-step explanation:

-2/3 = -0.66666667

2/-3 = 0.666666667

Answer:

the second on 222222222222

Multiply number pf people by amount they are having:

13 people x 4/5 pint = (13 x 4)/5 = 52/5 = 10 2/5 pints.

They need 10 2/5 pints total. ( Simplest form)

Since you can't buy a fraction of a pint, they would actually need to buy 11 pints

Answer:

36m/3

Step-by-step explanation:

because I took the test and all ready know that answer

Answer:

7x + 12

Step-by-step explanation:

(10x - 3x)     + 12

     7x      + 12

In standard form, this third-order polynomial - call it p(x) - has real coefficients a, b, c, d so that it is written as

p(x) = a x ³ + b x ² + c x + d

We're told the leading coefficient is a = 1, so

p(x) = x ³ + b x ² + c x + d

Since the coefficients are all real, any complex roots with non-zero imaginary part occurs alongside its complex conjugate, so the fact that -2 + i is a root means that its conjugate, -2 - i is also a root.

Then by the factor theorem, we can write p(x) as the product of linear terms involving its roots:

p(x) = (x - (-2 + i )) (x - (-2 - i )) (x - 7)

Now just expand this to get

p(x) = x ³ - 3 x ² - 23 x - 35

Answer:

4.5

Step-by-step explanation:

Since the slope of the equation is 40, we know that for every gallon of gas used, the car travels 40 miles. We know that in total he traveled 180 mi, so if we divide 40 into 180 we can find out how many gallons of gas he used.

180 / 40 = 4.5

so 4.5 gallons of gas were used. To check our work we can just substitute it back into the equation

40 x 4.5 = 180

This equation is true, so now we know that 4.5 gal of gas was used in total. I hope this helps you out :)