I’ll give brainliest please help!!



A canoe travels 9 miles per hour downstream and 1 mile per hour upstream.


Let x represent the canoe's speed with no water current in still water) and y


represent the speed of the water current, in miles per hour. Then the situation


can be represented by this system of equations:


x + y = 9


x- y = 1


Choose the two correct options.




A. The speed of the canoe in still water is 4 miles per hour.


B. The speed of the water current is 5 miles per hour.


C. The speed of the water current is 4 miles per hour.


D. The speed of the canoe in still water is 5 miles per hour.

(a)The optimal order quantity is  4609 units.

(b)The time between orders is  1.98 months.

To determine the optimal order quantity and the approximate time between orders, the Economic Order Quantity (EOQ) model. The EOQ model minimizes the total cost of inventory by balancing ordering costs and carrying costs.

Optimal Order Quantity:

The formula for the EOQ is given by:

EOQ = √[(2DS) / H]

Where:

D = Annual demand

S = Cost per order

H = Holding cost per unit per year

calculate the annual demand (D) using the 2020

sales numbers provided:

D = 651 + 808 + 514 + 174 + 435 + 426 + 687 + 582 + 662 + 1551 + 1295 + 1774

= 9559 units

To calculate the cost per order (S) and the holding cost per unit per year (H).

The cost per order (S) is given as $500.

The holding cost per unit per year (H)  calculated as follows:

H = Carrying cost percentage × Unit value

= 0.30 × $3

= $0.90

substitute these values into the EOQ formula:

EOQ = √[(2 × 9559 × $500) / $0.90]

= √[19118000 / $0.90]

≈ √21242222.22

≈ 4608.71

Approximate Time Between Orders:

To calculate the approximate time between orders, we'll divide the total number of working days in a year by the number of orders per year.

Assuming 360 days in a year and a lead time of 1 week (7 days) for shipping, we have:

Working days in a year = 360 - 7 = 353 days

Approximate time between orders = Working days in a year / Number of orders per year

= 353 / (9559 / 4609)

= 0.165 years

Converting this time to months:

Approximate time between orders (months) = 0.165 × 12

= 1.98 months

To know more about quantity here

https://brainly.com/question/14581760

#SPJ4

Answer:

Step-by-step explanation:

1. 3(9 - 3x)  - 3x  = 3

   27 - 9x - 3x = 3

   27 - 12x = 3

   -12x = -24

     x = 2

    y = 9 - 3(2) = 9 - 6 = 3

2. 4x - 8(1/2x + 6) = -48

    4x - 4x - 48 = -48

       -48 = -48

     infinitely many solutions

The answer to the questions on instrument are:

True

True

True

True

False

True

True: A survey timeline typically includes various dates related to the survey administration, such as the start and end dates for participant recruitment, the date for activation of the measurement instrument, and the deadline for completing the survey. The date for activation of the measurement instrument refers to the date on which the survey respondents can begin answering the questions.

True: Instrument disposition refers to the process of distributing and collecting the measurement instruments. This can involve various methods, such as mailing the instruments to the participants or delivering them to a dropbox for paper-and-pencil instruments.

True: Participant data entry can increase the accuracy of a data record because it eliminates the need for manual data entry, which can introduce errors. With participant data entry, the participants themselves enter their responses directly into a computer or mobile device, ensuring that the data is accurate and complete.

True: A significant number of "Don’t Know" responses to a closed measurement question may indicate that the measurement instrument failed to provide appropriate response categories. If the survey respondents are unsure about how to answer a question and there is no appropriate response option available, they may select "Don’t Know" instead.

False: Cross-tabulation in CFA (Confirmatory Factor Analysis) is typically used to examine the relationship between two or more variables, and it is not called a contingency table. A contingency table is a table used to display the frequencies and/or percentages of two or more categorical variables.

True: Percentages are a way of expressing data in relation to a base of 100, making it easier to compare variables. For example, if 80 out of 100 respondents answered "Yes" to a question, we can say that the percentage of respondents who answered "Yes" is 80%. This allows us to compare the percentage of "Yes" responses to other questions or variables in the survey.

Learn more about measurement instrument on:

https://brainly.com/question/787793

#SPJ1

Answer:

x = -19; y = 25/3

Step-by-step explanation:

Step 1: solve the equation with only one variable

Isolate the variable (x)

x + 10 = -9

x = -9 - 10

x = -19

Step 2: input new information into the other equation

If x = -19, then:

2(-19) - 6y = 12

Isolate the variable (y)

-38 - 6y = 12

-6y = 12 + 38

-6y = 50

y = 50 ÷ 6

y = 50/6

Simplify

y = 25/3

V = 5000(1/2)^(t/4) is an exponential function, where the base is 1/2 and the exponent is t/4.

We can observe that the item's value decreases by half every 4 years. For instance, after 4 years, its worth is $2500, after 8 years, it is $1250, after 12 years, it is $625, and so on. This trend suggests an exponential decay pattern. To express this relationship mathematically, we can define a function V that represents the value of the item in dollars as a function of time t in years. The function can be written as:

V = 5000(1/2)^(t/4) In this equation, V represents the value of the item, and the term (1/2)^(t/4) captures the exponential decay process. The base of the exponent, 1/2, reflects the halving of the value every 4 years. The exponent, t/4, denotes the number of 4-year intervals that have passed since the initial value of $5000.

Hence, the function V = 5000(1/2)^(t/4) describes the decreasing value of the item over time using an exponential function with a base of 1/2 and an exponent of t/4.

To learn more about exponential functions: https://brainly.com/question/2456547

#SPJ11

The surface area of the rectangular prism is 170 square yards.

Surface area is the total area of a three-dimensional shape's surface. Add the areas of all six faces to find the surface area of a cuboid with six rectangular faces. Alternatively, label the cuboid's length (l), width (w), and height (h) and use the formula: surface area (SA)=2lw+2lh+2hw.

To calculate the surface area of the rectangular prism, add the areas of each of its faces.

The front and back faces are 5 yards by 6 yards in size, so each has an area of:

5 yards x 6 yards equals 30 square yards

The top and bottom faces are 5 yards by 5 yards, so each has an area of:

5 yards x 5 yards equals 25 square yards

The two side faces have dimensions of 6 yards by 5 yards, for a total area of:

30 square yards = 6 yards x 5 yards

As a result, the surface area of the rectangular prism is as follows:

Front face area plus back face area plus top face area plus bottom face area plus left side face area plus right side face area

= 30+30+25+25+30+30

= 170 square yards

As a result, the rectangular prism has a surface area of 170 square yards.

To know more about surface area visit:

hhttps://brainly.com/question/29298005

#SPJ1

Answer:

c. 3  

yes you are right, good job!!

Step-by-step explanation:

18 divided by what equals 2?

18 / 2 = 9 so 18 / 9 = 2

so 27 / 9 = y which y = 3

check: 9 x 3 = 27

Answer:

Yes, C

Step-by-step explanation:

18/2 = 9 so you need to divide 27 by 9 to get 3

Answer:

The graph is an absolute value function with vertex (4, –7)

Step-by-step explanation:

|x-4| is always positive

minimal value of |x-4| = 0

x-4 = 0           x=4

y = |4-4| - 7 = -7

Answer:

250

Step-by-step explanation:

....................

Answer:

11 is the correct answer

Step-by-step explanation:

21-10

Answer:

Use scale factor

Step-by-step explanation:

The factor that does NOT control the stability of a slope is the angle of repose for intact bedrock. The angle of repose refers to the steepest angle at which a pile of loose material remains stable without sliding. It is mainly applicable to loose materials like soil and granular substances, not intact bedrock.

Bedrock stability depends on factors such as its strength, fracturing, and geological properties, rather than the angle of repose. Factors that control the stability of a slope include whether the slope is rock or soil. Rock slopes tend to be more stable than soil slopes due to the cohesive nature of intact rock.

The amount of water in the soil also affects slope stability, as excessive water can increase pore pressure and reduce the shear strength of the soil, leading to slope failure. Additionally, the orientation of fractures, cleavage, and bedding in the rock can influence slope stability by creating planes of weakness or strength.

To summarize, while the angle of repose is a significant factor in slope stability, it is not applicable to intact bedrock. The stability of a slope is influenced by the type of material (rock or soil), the presence of water, and the orientation of fractures and bedding.

know more about Bedrock.

https://brainly.com/question/2948854

#SPJ11

(15+3) x n

Is the correct answer

Answer:

f(n)= 3n+15

Step-by-step explanation:

Answer: 24 = 4x

Step-by-step explanation:

First define a variable for the unknown quantity : in this situation we’ll let x represent the cost of one sandwich

now we know that 4 Sandwiches multiplied by x will equal 24

so 4x = 24 or 24 = 4x

250 adult tickets and 250 student tickets must be sold for the members to raise exactly $2,050 and the ticket sales fell $237.50 below the goal of $2,050.

According to the problem, the total number of tickets sold is 500, so we can write:

x + y = 50

The total revenue must be $2,050, so we can write:

6.5x + 3.5y = 2050

We can solve this system of equations to find the values of x and y:

x = 250 and y = 250

Therefore, 250 adult tickets and 250 student tickets must be sold for the members to raise exactly $2,050.

b. Let's use the same variables x and y as in part a, and let's use z to represent the number of tickets sold at the performance.

According to the problem, y = 3x, and z = 480. We can use this information to write two equations:

x + y = 500

y = 3x

x + y + z = 480

Now 125 + 375 + z = 480

z = -20

This means that 20 fewer tickets were sold than necessary to reach the goal of $2,050.

The total revenue from the tickets sold is:

6.5x + 3.5y = 6.5(125) + 3.5(375) = $2,312.50

Hence,250 adult tickets and 250 student tickets must be sold for the members to raise exactly $2,050 and the ticket sales fell $237.50 below the goal of $2,050.

To learn more on Equation:

https://brainly.com/question/10413253

#SPJ1

Since the figure is dilated by a factor of 4, the coordinates of point g of the pre-image is (-2, 1)

The coordinates of the image are given as:

The dilation rule is given as:

(x,y) -> 4(x,y)

So, we have:

(-8,4) = 4 * g

Divide both sides by 4

g = (-2,1)

Hence, the coordinates of point g of the pre-image is (-2, 1)

Read more about dilation at:

https://brainly.com/question/3457976

#SPJ4

Answer:

A

Step-by-step explanation:

edge

The coordinates of X'' is (-4, 7) after the transformation

From the question, we have the following parameters that can be used in our computation:

X = (4, -7)

Then, we have the transformations to be

X'' = R y axis (R x axis(X))

This transformation means that

Mathematically, this is represented as

(x, y) = (-x, -y)

Substitute the known values in the above equation, so, we have the following representation

(x, y) = (-4, 7)

Hence, the image is (-4, 7)

Read more about transformation at

https://brainly.com/question/27224272

#SPJ1

To calculate the probability of randomly selecting a vehicle with an engine between 3.1 L and 4.2 L, we need additional information such as the total number of vehicles available and the distribution of engine sizes. Without this information, it is not possible to determine the probability.

To calculate the probability of randomly selecting a vehicle with an engine between 3.1 L and 4.2 L, we need to know the total number of vehicles available and the distribution of engine sizes among those vehicles.

1. Determine the number of vehicles with engines between 3.1 L and 4.2 L:

  This information is crucial to calculating the probability. If we have the number of vehicles falling within this range, we can use it to calculate the probability.

2. Calculate the probability:

  If we know the total number of vehicles available, including those with engines between 3.1 L and 4.2 L, we can divide the number of vehicles falling within this range by the total number of vehicles to calculate the probability.

Without these specific details, it is not possible to provide an accurate calculation of the probability. The probability of randomly selecting a vehicle with an engine between 3.1 L and 4.2 L depends on the specific characteristics of the vehicle population, such as the total number of vehicles and the distribution of engine sizes.

Learn more about probability  : brainly.com/question/31828911

#SPJ11

On a postsynaptic membrane, the opening of K+ ion channel induces an IPSP (Inhibitory Postsynaptic Potential).

The potential changes in a neuron after the receptor and ion channel activation is called synaptic potential. This potential can be either an Excitatory Postsynaptic Potential (EPSP) or an Inhibitory Postsynaptic Potential (IPSP).EPSP is a depolarizing potential that results from the opening of the Na+ ion channel. It causes a change in the potential of the neuron towards threshold level that may trigger an action potential.Ion channels and pumps in a postsynaptic neuron regulate the internal potential of the cell. In a typical postsynaptic cell, the resting potential (Vrest) is -70 mV, the threshold value is -55 mV, the reversal potential for Cl- ion (Ec) is -63 mV, the reversal potential for K+ ion (Ex) is -90 mV, and the reversal potential for Na+ ion (ENa) is 60 mV.The opening of Cl- ion channel leads to an inward flow of negative ions and thus results in hyperpolarization. The opening of K+ ion channel leads to an outward flow of K+ ions, and the membrane potential becomes more negative. Thus, it also results in hyperpolarization. The opening of a Na+ ion channel leads to inward flow of Na+ ions, which makes the cell more positive, and it is depolarization. Therefore, the opening of K+ ion channel leads to an IPSP, and it hyperpolarizes the neuron.

The postsynaptic potential can be either an Excitatory Postsynaptic Potential (EPSP) or an Inhibitory Postsynaptic Potential (IPSP). The opening of the K+ ion channel leads to an outward flow of K+ ions, which makes the cell more negative and hyperpolarizes it, leading to IPSP.

To learn more about postsynaptic membrane visit:

brainly.com/question/14969022

#SPJ11

Answer:

D

Step-by-step explanation:

since the car value is decreasing by 12% each year, just take the original  amount and multiply by 88% to get the value of the car for the next year, so on and so forth

The correct response is d. A primitive is associated with both data and methods, whereas an object merely holds data.

Information that has been transformed into a format suitable for transmission or processing is referred to as data in computing. Information that has been binary-digitally altered for use with contemporary computers and transmission methods is referred to as data. The topic data may be expressed in both the singular and plural forms. Data can take the shape of text, observations, figures, photographs, statistics, graphs, and symbols. Individual prices, weights, addresses, ages, names, temperatures, dates, or distances, for instance, might be included in the data. Data lacks significance and utility on its own because it is an unprocessed sort of knowledge. Basic data includes information like a person's name, last name, address, phone number, cell number, fax number, email address, and vehicle license plate.

To know more about data here

https://brainly.com/question/26711803

#SPJ4

Answer:

67

Step-by-step explanation:

we have a gap between 1st and 2nd terms of 4. a gap between 2nd and 3rd of 8. 16 for next gap. the gap doubles every time.

so we expect gap between 4th and 5th terms to be 2 X 16 = 32.

35 + 32 = 67. that is the next number in the sequence.

The 8-puzzle problem can be categorized as a "Pathfinding problem."

The 8-puzzle is a classic problem in artificial intelligence and computer science. It involves a 3x3 grid with eight numbered tiles and one empty space. The objective is to rearrange the tiles from an initial configuration to a goal configuration by sliding them into the empty space.

The reason why the 8-puzzle problem is classified as a pathfinding problem is that it involves finding a sequence of moves or actions to reach a desired state or goal. In this case, the desired state is the goal configuration of the puzzle. The problem requires determining the optimal sequence of moves that lead to the goal state while considering the constraints and limitations of the puzzle.

Pathfinding problems involve finding the shortest or optimal path from a starting point to a goal or destination. In the 8-puzzle problem, the empty space serves as the movable "agent" that can slide adjacent tiles. The objective is to find the shortest sequence of moves or actions to transform the initial configuration into the goal configuration, effectively finding a path to the solution.

Therefore, due to its nature of finding an optimal sequence of moves to reach a goal state, the 8-puzzle problem can be categorized as a pathfinding problem.

Learn more about limitations here:

brainly.com/question/12207539

#SPJ11

Answer:

Y= 2.3033x + 160.71

Step-by-step explanation:

The value of the slope m is 2.55 and the y-intercept of the line is 135.

A relationship between two or more parameters that, when shown on a graph, produces a linear model. The degree of the variable will be one.

The linear equation is given as,

y = mx + b

Where m is the slope of the line and b is the y-intercept of the line.

From the table, the two points will be (60, 288.1) and (100, 390).

Then the slope of the line will be

m = [(390 - 288.1) / (100 - 60)]

m = 101.9 / 40

m = 2.55

Then the equation of the line will be

y = 2.55x + b

The equation is passing through (100, 390). Then the value of b will be

390 = 2.55 (100) + b

390 = 255 + b

b = 135

Then the equation of the line will be

y = 2.55x + 135

The value of the slope m is 2.55 and the y-intercept of the line is 135.

The complete question is attached below.

More about the linear equation link is given below.

https://brainly.com/question/11897796

#SPJ5

Step-by-step explanation:

-2 1/3 -(-5) can be simplified as follows:

-2 1/3 + 5

= -7/3 + 15/3 (converting mixed numbers to improper fractions)

= 8/3

Therefore, the solution is 8/3, which can also be expressed as 2 2/3.

So, the answer is (B) 2 2/3.

Answer:

I believe its c because a b and d are far off

Step-by-step explanation:

Answer:

i was born 2008

Step-by-step explanation: