I need some help please

If the flow rate of the tap is reduced to 7 litres per minute, it would take 36 hours to fill the reservoir.

Let's use the formula:

time = volume/flow rate

where volume is the volume of the reservoir and flow rate is the flow rate of the tap.

Let V be the volume of the reservoir.

With a flow of 18 litres per minute, we have:

14 hours = V / 18 L/min

Solving for V, we get:

V = 14 hours x 18 L/min = 252 L

Now, let's find the time it takes to fill the same reservoir with a flow of 7 litres per minute:

time = V / 7 L/min

Substituting V with 252 L, we get:

time = 252 L / 7 L/min = 36 hours

Therefore, it will take 36 hours to fill the reservoir with a flow rate of 7 litres per minute.

Learn more about Volume here:

https://brainly.com/question/1578538

#SPJ1

Answer:

First, let's calculate the total cost of buying the shares:

1000 shares * $15.23/share = $15,230

Next, we need to calculate the commission paid to the broker for buying the shares:

$15,230 * 0.0075 = $114.23

So, the total cost of buying the shares including the commission is:

$15,230 + $114.23 = $15,344.23

Now, let's calculate the total revenue from selling the shares:

1000 shares * $18.78/share = $18,780

We also need to calculate the commission paid to the broker for selling the shares:

$18,780 * 0.0075 = $140.85

So, the total revenue from selling the shares after the commission is:

$18,780 - $140.85 = $18,639.15

The total profit from buying and selling the shares is:

$18,639.15 - $15,344.23 = $3,294.92

The rate of return is the profit divided by the total cost, expressed as a percentage:

($3,294.92 / $15,344.23) * 100% = 21.5%

Therefore, Omar's rate of return is 21.5%.

The minimum number of extra squares that need to be shaded so that the pattern has rotational symmetry of order is 3

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

The composite figure

On the extension at the left-hand side of the figure, we can see that

The shaded shape is a rectangle while other shaded shapes are squares

This means that the other shaded squares must be extended to form a rectangle

There are three of the squares that can be extended to rectangles

Hence, the minimum number of squares is 3

Read more about rotational symmetry at

https://brainly.com/question/2762589

#SPJ1

The required heat energy required to boil 75.25 g of ethanol is 62.1835 kJ.

The heat energy required to boil a substance can be calculated using the formula:

Q = m × Hv

where Q is the heat energy, m is the mass of the substance, and Hv is the heat of vaporization. From the given, we have m = 75.25 g and Hv = 0.826 kJ/g

Substituting the given values, we get:

Q = 75.25 g × 0.826 kJ/g

Q = 62.1835 kJ

Where kJ (kilojoule) is the unit of heat.

Therefore, the heat energy required to boil 75.25 g of ethanol is 62.1835 kJ.

Learn more about heat energy here:

https://brainly.com/question/29210982

#SPJ1

The possible equation for Nate's line is C) 6x - 5y = 15.

To find the equation of the line perpendicular to Maria's line, we need to determine the slope of Maria's line first.

Maria's line is represented by the equation:

y = -5/6 x + 8

The slope of this line can be determined by comparing it to the slope-intercept form of a linear equation (y = mx + b), where m is the slope. Thus, the slope of Maria's line is -5/6.

The slope of a line perpendicular to Maria's line will be the negative reciprocal of -5/6, which is 6/5.

Therefore, the equation of Nate's line could be in the form:

y = 6/5 x + b

where b is the y-intercept of Nate's line.

To determine which of the given answer choices is the equation of Nate's line, we can substitute the equation y = 6/5 x + b into each answer choice and see which one holds true.

A) 5x - 6y = 15

Substituting y = 6/5 x + b, we get:

5x - 6(6/5 x + b) = 15

5x - 36/5 x - 6b = 15

-11/5 x - 6b = 15

This equation is not equivalent to y = 6/5 x + b, so A is not the answer.

B) 5x + 6y = 15

Substituting y = 6/5 x + b, we get:

5x + 6(6/5 x + b) = 15

5x + 36/5 x + 6b = 15

46/5 x + 6b = 15

This equation is not equivalent to y = 6/5 x + b, so B is not the answer.

C) 6x - 5y = 15

Substituting y = 6/5 x + b, we get:

6x - 5(6/5 x + b) = 15

6x - 6x - 5b = 15

-5b = 15

b = -3

This equation is equivalent to y = 6/5 x - 3, so C could be the answer.

D) 6x + 5y = 15

Substituting y = 6/5 x + b, we get:

6x + 5(6/5 x + b) = 15

6x + 6x + 5b = 15

12x + 5b = 15

This equation is not equivalent to y = 6/5 x + b, so D is not the answer.

Therefore, the possible equation for Nate's line is C) 6x - 5y = 15.

for such more question on equivalent

https://brainly.com/question/2328454

#SPJ11

Answer:

We have to use 3 for pi it says

Volume for cylinder:

V= pi*r²*h

Input values=

3x2²x7

=84

Volume of the cone:

pi*r²*h/3

Input values:

84/3

=28

Add them 84+28= 112

In order to break even, either 5 cameras or 6 cameras must be produced and sold.

At break-even point, revenue (R) equal is set to equal the cost (C)

Given that:

R = 24x - x².

C = 30 + 13x.

where

R is revenue and

C is the cost

Setting R equal to C:

24x - x² = 30 + 13x

Rearranging the equation:

x² - 11x + 30 = 0

Now, we can solve this quadratic equation to find the break-even point(s).

Factoring the quadratic equation:

(x - 6)(x - 5) = 0

Setting each factor equal to zero:

x - 6 = 0  ==> x = 6

x - 5 = 0  ==> x = 5

Therefore, the break-even point occurs when x = 6 or x = 5.

Learn more about revenue here:

https://brainly.com/question/16232387

#SPJ1

The graph of the inequality is attached in the solution.

Given is an inequality, 2y > x-2, we need to graph it,

So, considering this as, 2y = x-2

Solving like a linear equation to get the points to plot,

So,

Put y = 0,

0 = x - 2

x = 2

(2, 0)

Put x = 0,

2y = 0-2

y = -1

(0, -1)

Hence the two points from which the graph will pass are (2, 0) and (0, -1).

Now, since the inequality has a > sign so the shaded area will be above the line and the line will be dotted.

Learn more about inequality click;

https://brainly.com/question/30231190

#SPJ1

When C = 20, F is equal to 68, and when F = 100, C is approximately 37.78.

Given the equations:

C = (5/nine) * (F - 32)

F = (9/5) * C + 32

If we replace specific values for F or C, we will locate the corresponding price for the opposite variable. Here are some examples:

Let's expect C = 20. Substituting this fee into the second equation:

F = (9/five) * 20 + 32

F = 36 + 32

F = 68

Therefore, when C = 20, F is equal to sixty-eight.

Let's expect F = a hundred. Substituting this cost into the primary equation:

C = (five/9) * (100 - 32)

C = (5/9) * 68

C = 340/9

C ≈ 37.78

So, whilst F = one hundred, C is approximately 37.78.

These examples exhibit how you may locate the values of F and C by using substituting one variable into the equations and fixing for the alternative variable. Remember, you could choose any unique values for F or C and perform the calculations consequently.

To know more about substitution,

https://brainly.com/question/29896044

#SPJ1

The correct question is:

"C=5/9 (f -32)

F= 9/5C + 32

Solve for F and C"

Answer:

121

Step-by-step explanation:

firstly you arrange the numbers in ascending order the number in the middle is considered to be the median

The three statements which are true include the following:

A. The radius of the circle is 3 units.

B. The center of the circle lies on the x-axis.

D. The radius of this circle is the same as the radius of the circle whose equation is x² + y² = 9.

In Mathematics, the standard form of the equation of a circle is represented by this mathematical expression;

(x - h)² + (y - k)² = r²   .......equation 1.

Where:

h and k represents the coordinates at the center of a circle.

r represents the radius of a circle.

Based on the information provided, we have the following equation of a circle:

x² + y² – 2x – 8 = 0      ......equation 2.

In order to determine the true statements, we would rewrite the equation in standard form and then factorize by using completing the square method:

x² – 2x + y² = 8 = 0

x² – 2x + (2/2)² + y² = 8 + (2/2)²

x² – 2x + 1 + y² = 8 + 1

(x – 1)² + (y - 0)² = 9         .......equation 3.

By comparing equation 1 and equation 3, we have the following:

Center (h, k) = (1, 0)

Radius (r) = 3

Additionally, this line and the center of the given circle lies on the x-axis (x-coordinate) because the y-value is equal to zero (0).

(x - 0)² + (y - 0)² = 3²

x² + y² = 9.

Read more on equation of a circle here: brainly.com/question/17028215

#SPJ1

Complete Question:

Consider a circle whose equation is x² + y² – 2x – 8 = 0. Which statements are true? Select three options.

The radius of the circle is 3 units.

The center of the circle lies on the x-axis.

The center of the circle lies on the y-axis.

The standard form of the equation is (x – 1)² + y² = 3.

The radius of this circle is the same as the radius of the circle whose equation is x² + y² = 9.

The appropriate measure of variability for this data is the IQR, and its value is 250.

We have,

The range is not the best measure of variability for this data since it only takes into account the maximum and minimum values and does not consider the other values in the dataset.

The IQR (interquartile range) is a better measure of variability since it gives a measure of the spread of the middle 50% of the data.

To find the IQR, we first need to find the median:

Arranging the data in order, we get:

200, 450, 600, 650, 700, 800

The median is the middle value, which is 650.

The first quartile (Q1) is the median of the lower half of the data:

Q1 = median(200, 450, 600) = 450

The third quartile (Q3) is the median of the upper half of the data:

Q3 = median(700, 800, 650) = 700

The IQR is the difference between Q3 and Q1:

IQR = Q3 - Q1

= 700 - 450

= 250

Therefore,

The appropriate measure of variability for this data is the IQR, and its value is 250.

Learn more about the interquartile range here:

https://brainly.com/question/29204101

#SPJ1

A linear model that best fits the data include the following: D. y = -1.6881x + 92.571.

In this scenario, the time would be plotted on the x-axis (x-coordinate) of the scatter plot while the elevation of a snow boarder would be plotted on the y-axis (y-coordinate) of the scatter plot through the use of Microsoft Excel.

On the Microsoft Excel worksheet, you should right click on any data point on the scatter plot, select format trend line, and then tick the box to display an equation for the line of best fit (trend line) on the scatter plot.

From the scatter plot (see attachment) which models the relationship between the time and the elevation of a snow boarder, an equation for the line of best fit is given by:

y = -1.6881x + 92.571

Next, we would substitute the x-values into the equation for the line of best fit as follows;

When x = 0, we have:

y = -1.6881(0) + 92.571

y = 92.571 ≈ 93.

When x = 5, we have:

y = -1.6881(5) + 92.571

y = 84.1305 ≈ 84.

When x = 10, we have:

y = -1.6881(10) + 92.571

y = 75.69 ≈ 76.

In conclusion, we can logically conclude that the slope of this graph (line) is negative because the line decreases downward, and this is best modeled by only this equation y = -1.6881x + 92.571.

Read more on scatter plot here: brainly.com/question/28605735

#SPJ1

Missing information:

The question is incomplete and the complete question is shown in the attached picture.

The large box weighs 18.75 kg, and the small box weighs 15.75 kg.

We have,

Let's assume the weight of a large box is L kg, and the weight of a small box is S kg.

According to the given information, we can create the following equations:

Equation 1: 3L + 5S = 135 (1st delivery)

Equation 2: 9L + 7S = 279 (2nd delivery)

To solve these equations, we can use a method called "elimination" or "substitution."

Multiply Equation 1 by 3 and Equation 2 by 1, so that the coefficients of L will be the same:

Equation 1: 9L + 15S = 405

Equation 2: 9L + 7S = 279

Now, we can subtract Equation 2 from Equation 1 to eliminate L:

(9L + 15S) - (9L + 7S) = 405 - 279

Simplifying:

8S = 126

Divide both sides of the equation by 8:

S = 126/8 = 15.75

So, the weight of a small box (S) is 15.75 kg.

Now,

substitute the value of S into Equation 1 to find the weight of a large box (L):

3L + 5(15.75) = 135

3L + 78.75 = 135

3L = 135 - 78.75

3L = 56.25

Divide both sides of the equation by 3:

L = 56.25/3 = 18.75

So,

The weight of a large box (L) is 18.75 kg.

Thus,

The large box weighs 18.75 kg, and the small box weighs 15.75 kg.

Learn more about equations here:

https://brainly.com/question/17194269

#SPJ1

Using the output expenditure model, the purchase of the bicycle would be an example of C) consumer spending.

Consumer spending is the expenditure made for the purchase of final goods and services by individuals and households.

In this situation, Dennis as a consumer is not a business organization, government institution, or an exporter, but an individual.

The expenditure for the purchase of a new bicycle is an expense for a final good.

Thus, under the output expenditure model, the purchase of a new bicycle is not a business investment, government spending, or a net export, but it is a consumer spending.

Learn more about consumer spending at https://brainly.com/question/13282888.

#SPJ1

Melissa will drink 7/32 gallons more water than Holden after hiking 14 miles.

Holden drinks 1/8 gallon of water every 2 miles, so after hiking 14 miles, he would have drank (14/2) * (1/8) = 7/16 gallons of water.

Melissa drinks 3/8 gallon of water every 2 miles, so after hiking 14 miles, she would have drank (14/2) * (3/8) = 21/32 gallons of water.

The difference in the amount of water they drink is:

21/32 - 7/16 = 21/32 - 14/32 = 7/32 gallons

Therefore, Melissa will drink 7/32 gallons more water than Holden after hiking 14 miles.

Learn more about fractions on

https://brainly.com/question/78672

#SPJ1

For the additive opposites x+4y=28 and -x+y=12, yes, y is equal to 8.

In order to solve the given system of equations, we would apply the substitution method. Based on the information provided above, we have the following system of equations:

x + 4y = 28      .......equation 1.

-x + y = 12         .......equation 2.

By making x the subject of formula in equation 2, we have the following:

x = y - 12           .......equation 3.

By using the substitution method to substitute equation 3 into equation 1, we have the following:

y - 12 + 4y = 28

5y = 28 + 12

5y = 40

y = 40/5

y = 8

Read more on equation here: brainly.com/question/28148072

#SPJ1

Solving a linear equation we can see that the smallest number is 5.

A set of 3 consecutive odd numbers can be written as:

x, x + 2, and x + 4

the middle one is x + 2, and we know that 4 times the second must be equal to the sum of the other two plus 14, then we can write the linear equation:

4*(x + 2) = x + x + 4 + 14

Solving this linear equation we will get:

4x + 8 = 2x + 18

4x -2 x=  18 - 8

2x = 10

dividing both sides by 2, we will get:

x = 10/2

x = 5

That is the smalles odd number.

Learn more about odd numbers at:

https://brainly.com/question/543861

#SPJ1

Answer:

The answer is -4.4.

Step-by-step explanation:

First, you have to add -12 + -10 + -6 and it equals -28. Next add the positive numbers 4+ 2 equals 6. Then, put them altogether meaning -28 + 6 equals -22, then divide it by the number of players which is 5 then you get the answer of -4.4.

Have a nice day.

(C) Investment A is an ordinary annuity with 3,906.64 in the account after 1 year is correct option.

Both Investment A and Investment B are annuities, but we need to determine which one is an ordinary annuity. An ordinary annuity is one in which payments are made at the end of each period, while in an annuity due, payments are made at the beginning of each period.

Looking at the table, we can see that Investment A and Investment B both have payments made at the end of each month, so they are both examples of ordinary annuities.

To calculate the future value of each annuity after one year, we can use the formula:

[tex]FV = P \times [(1 + r)^n - 1] / r[/tex]

where:

FV is the future value of the annuity

P is the payment amount

r is the interest rate per period (in this case, 3.5% per month)

n is the number of periods (12 in this case, since we're looking at one year)

For Investment A, we have P = 350, r = 0.035, and n = 12. Plugging these values into the formula, we get:

FV = 350 × [(1 + 0.035[tex])^12[/tex] - 1] / 0.035

= 3,906.64

Therefore, the answer is (C) Investment A is an ordinary annuity with 3,906.64 in the account after 1 year.

for such more question on ordinary annuity

https://brainly.com/question/25792915

#SPJ11

Entertainment will comprise 90% of Ryan's total budget. He will allocate 90% of his monthly income towards entertainment expenses.

According to the given information:

Let's assume Ryan's take-home pay is P dollars.

Assuming that Ryan puts aside 10% of his net income for his retirement plan, he will accumulate savings of 0.10P dollars.

After setting aside funds for retirement, the remaining portion of his net earnings will constitute 90% of the original amount, equating to 0.90P dollars.

Assuming that Ryan puts the remaining amount of his income towards entertainment, it is possible to determine the proportion of his overall expenses that entertainment would represent.

Percentage of entertainment budget = (Entertainment budget / Total budget) * 100

Given an overall budget of P dollars, with 0.90P dollars allotted for entertainment expenses, the proportion of the total budget that will be spent on entertainment can be calculated as a percentage.

Percentage of entertainment budget = (0.90P / P) * 100

Percentage of entertainment budget = 90%

So, entertainment will comprise 90% of Ryan's total budget.

He will allocate a monthly entertainment budget of 0.90P dollars, equivalent to 90% of his salary after taxes.

As such, the overwhelming majority of Ryan's budget will be allocated towards Entertainment. Every month, the entertainment allowance will constitute 90% of his net income as per the allocated budget.

Read more about Percentage here:

https://brainly.com/question/24877689

#SPJ1

The meaning of the statement is if you take n distinct numbers, x₁, ..., xₙ, and permute them in all possible ways, the number of different values that the function f(x₁, ..., xₙ) can take on will be a divisor of n!.

This assertion is a specific instance of a broader concept known as the Principle of Inclusion-Exclusion in the field of combinatorics. The Principle of Inclusion-Exclusion asserts that when dealing with a set comprising n elements and aiming to determine the number of possible subsets that can be selected, one can arrive at this figure by summing up the number of options for choosing 0, 1, 2, and up to n elements from the set.

Regarding the aforementioned assertion, the collection of components comprises every potential arrangement of the numerical values x₁, ..., xₙ. There is only one possible way to choose 0 elements, there are n options for choosing 1 element, selecting 2 elements can be done in n(n-1)/2 ways, and the pattern continues.

Find out more on the Principle of Inclusion-Exclusion at https://brainly.com/question/30995367

#SPJ1

Answer: The probability of choosing an ace or a club is 16.

Step-by-step explanation:

Based on the given figures, the most likely transformation that maps figure ABCD onto figure A'B'C'D' is option A, reflection across the Y-axis.

This is because the x-coordinates of the corresponding points in the two figures are opposite to each other when reflected across the Y-axis.  

A rotation of 90⁰ clockwise or counter-clockwise about the origin would result in the image being in a different quadrant, and a rotation of 180° about the origin would place the image on the opposite side of the origin.

A translation would move the image to a different location without changing its orientation, but there is no indication in the question that a translation is a possible transformation. Hence it's a reflection across Y-axis.

Learn more about the Transformation at

https://brainly.com/question/30693006

#SPJ1

Correct Question

(Image Attached)

The probability of randomly selecting an apartment unit that has both internet and cable connection on the second floor = 0.23

Given that,

For second floor:

Total outcomes = 40

Network preference of internet & cable both = 9

Then Favorable outcomes = 9

Since we know that,

Probability is the ratio of number of favorable outcomes and total number of outcomes. It deals with finding out the likelihood of the occurrence of an event.

Therefore, to find the probability that,

P(Randomly selecting an apartment unit having internet and cable both )

= 9/40

= 0.225

≈ 0.23

Thus, the required probability = 0.23

Learn more about the probability visit:

https://brainly.com/question/13604758

#SPJ1

The number of fish, including angelfish and eels that are shown by the bar graph, can be found to be 45 fish .

The science museum water exhibit bar graph shows the number of animals that are in the water exhibit in the museum.

We see that there are 15 snakes, 10 Turtles, 25 Angelfish, and 20 eels.

If we are to find the number of fish in the science museum water exhibit, all we need to do is to sum up the number of Angelfish and Eels. Doing this sum would add up to :

= 25 Angelfish + 20 eels

= 45 fish

Find out more on bar graphs at https://brainly.com/question/30879979

#SPJ1

The mass of 405 cm³ of milk is 417.15 g.

To solve this problem need to use the formula:

mass = volume x density

The volume of milk given in the problem is 405 cm³ and the density of milk is 1.03 g/cm³.

Substitute these values in the formula to calculate the mass of the milk.

mass = 405 cm³ x 1.03 g/cm³

mass = 417.15 g

The mass of 405 cm³ of milk is 417.15 g.

To understand the concept behind this formula we need to understand what density is.

Density is defined as the amount of mass per unit volume of a substance.

It is expressed in units of grams per cubic centimeter (g/cm³) for solids and liquids.

The formula for calculating the mass of a substance is the product of its volume and density.

In this problem we have been given the volume and density of milk so we can easily calculate its mass using this formula.

The density of a substance can vary with changes in temperature and pressure.

For similar questions on mass

https://brainly.com/question/19385703

#SPJ11

Answer:

where do you live

Step-by-step explanation:

Answer:

50

Step-by-step explanation:

To solve this problem, we can use the following formula:

(amount of solution 1) + (amount of solution 2) = total amount of mixture

We can also set up equations for the amount of acid in each of the solutions:

0.25(amount of solution 1) + 0.65(amount of solution 2) = 0.4(total amount of mixture)

We have two equations and two unknowns, so we can solve for the amounts of each solution. Let's set x to be the amount of the 25% acid solution and y to be the amount of the 65% acid solution. Then we have:

x + y = 80                (equation 1)

0.25x + 0.65y = 0.4(80)   (equation 2)

We can simplify equation 2 by multiplying everything by 100, to get rid of the decimals:

25x + 65y = 3200

Now we can solve this system of equations. One way to do this is to solve equation 1 for one of the variables, and substitute it into equation 2. We get:

x = 80 - y

25(80 - y) + 65y = 3200

2000 - 25y + 65y = 3200

40y = 1200

y = 30

So we need 30 liters of the 65% acid solution. To find the amount of the 25% acid solution, we can substitute y = 30 into equation 1:

x + 30 = 80

x = 50

So we need 50 liters of the 25% acid solution. Therefore, we need 50 liters of the 25% acid solution and 30 liters of the 65% acid solution to produce 80 liters of a 40% acid solution.

Answer: It takes riders 4 seconds to drop 60 feet on the drop tower at Carowinds.

Step-by-step explanation:To answer the question, we need to solve for t in the given function.

h = -16t^2 + 64t + 60

We know that the height dropped is 60 feet. So, we can substitute h with 60 and solve for t.

60 = -16t^2 + 64t + 60

Simplifying the equation, we get:

16t^2 - 64t = 0

Dividing both sides by 16t, we get:

t - 4 = 0