Please answer with formula and how to find it

The population density of seals is 0.0111 seals/m³.

To calculate the number of meters of tiles needed to purchase, we must first calculate the area of the pool. This can be done by multiplying the length by the width:

9m x 4m = 36m²

We then multiply this area by the depth of the pool to get the total volume:

36m² x 2.5m = 90m³

Now, to calculate the number of meters of tiles needed, we must divide the total cost of the tiles, including installation, by the cost of the tiles per meter:

90 pesos + 50 pesos = 140 pesos

140 pesos ÷ 90 pesos = 1.55 meters

Therefore, 1.55 meters of tiles must be purchased to cover the pool.

To calculate the volume of water for two seals, we must first calculate the volume of the pool, which can be done by multiplying the length by the width and then by the depth:

9m x 4m x 2.5m = 90m³

We then multiply this volume by the number of seals to get the total volume of water needed:

90m³ x 2 seals = 180m³

Therefore, 180m³ of water is needed for two seals to live in the pool.

To calculate the population density of seals, we must divide the total population of seals by the total volume of water needed:

2 seals ÷ 180m³ = 0.0111 seals/m³

Learn more about total volume here:

https://brainly.com/question/29300532

#SPJ4

a) The expected value for the weight of a randomly chosen apple from the box is 11/24.

b) The variance of the weight of a randomly chosen apple from the box is 19/72.

a) The expected value of the weight of a randomly chosen apple from the box can be calculated as:

E[Y] = E[E[Y|Z]] = E[1/(2Z)] = 1/2 * (1/2 + 1/4 + 1/6) = 11/24

Therefore, the expected value for the weight of a randomly chosen apple from the box is 11/24.

b) The variance of the weight of a randomly chosen apple from the box can be calculated as:

Var(Y) = E[Var(Y|Z)] + Var(E[Y|Z])

Since E[Y|Z=j] = 1/(2j) and E[Y²|Z=j] = 1/j, we have:

Var(Y|Z=j) = E[Y²|Z=j] - [E[Y|Z=j]]² = 1/j - (1/(2j))² = (3/4) * (1/j²)

Therefore, we can calculate the variance of Y as:

Var(Y) = E[Var(Y|Z)] + Var(E[Y|Z])

= 1/3 * (3/4 * (1/1²) + 3/4 * (1/2²) + 3/4 * (1/3²)) + Var(11/24)

= 1/4 * (1 + 1/4 + 1/9) + 0

= 19/72

So, the variance of the weight of a randomly chosen apple from the box is 19/72.

Learn more about variances at https://brainly.com/question/17007499

#SPJ11

The probability of selling at least one property in one week is 0.9718

We can approach this problem by finding the probability of not selling any property in a week and then subtracting it from 1 to get the probability of selling at least one property.

The probability of not selling any property in a week is the probability of not selling any one property in a week, raised to the power of the number of properties:

P(not selling any property) = (1 - 0.4)^11 = 0.0282

Therefore, the probability of selling at least one property in a week is:

P(selling at least one property) = 1 - P(not selling any property) = 1 - 0.0282 = 0.9718

Learn more about probability here

brainly.com/question/11234923

#SPJ4

The current flows through the element with resistance of an electric stove burner element is 11 ohms when it runs off a 220 volt line is equals to the 20 Ampere.

The resistance of an electric stove burner element is, R = 11 ohms.

The magnitude or amount of potential

difference in a line that is voltage V

= 220 V.

We have to determine the value current flows through this element.

According to ohm's law : If all physical conditions and temperature remain constant, the voltage across a conductor is proportional to the current flowing through it. The expression is, V = I x R

here, I-> the amount of current

V--> potential difference

R--> resistance

The current value flowing through the element is written by I = V/R

=> I = 220 V/11 ohms

=> I = 20 A

Hence, the required current value is 20 A.

For more information about ohm's law, visit :

https://brainly.com/question/17770358

#SPJ4

It will take approximately 7.78 years for your salary at job A to exceed your salary at job B.

To solve this problem, we need to set up an equation. Let x represent the number of years that it will take for your salary at job A to exceed your salary at job B. We can use this equation to solve for x:

$46,000(1.05)^x > $55,000(1.02)^x

Now, let's simplify this equation to solve for x:

(1.05)^x > (1.02)^x * (55000/46000)

Taking the natural log of both sides of the equation:

xlog(1.05) > log(1.02) + log(55000/46000)

Solving for x:

x > [log(1.02) + log(55000/46000)]/log(1.05) ~ 7.78

It will take approximately 7.78 years for your salary at job A to exceed your salary at job B.

To know more about Algebraic expressions refer here:

https://brainly.com/question/29131718?referrer=searchResults

#SPJ11

Answer: 9

Step-by-step explanation: sorry if it is wrong

Answer:

0

Step-by-step explanation:

2p - (p + 3) + 3

2(6) - (6 + 3) + 3

12 - (9) + 3

12 - 12 = 0

The solution to the system of equations y = -2x + 4 and y = 1/2x + 4 is the point (0, 4)

A system of equations is a set of two or more equations that are to be solved simultaneously.

The solution of a system of equations is a set of values that satisfy all the equations in the system.

Given the equations:

y = -2x + 4

y = 1/2x + 4

The question implies that we solve graphically

So, we create a plot of the equations y = -2x + 4 and y = 1/2x + 4

And we write out the coordinate of the point of intersection between the two equations

From the graph of the system of equations (see attachment), we have the point of intersection to be (0, 4)

This means that the solution to the system of equations is (0, 4)

Find more on equation at:

https://brainly.com/question/2972832

#SPJ1

Complete question

Solve the system of equations graphed on the coordinate axes below.

y = -2x + 4

y = 1/2x + 4

The overhead allocation rate for Department K is $52.63 and the overhead allocation rate for Department Q is $82.26.

The overhead allocation rate for departments K and Q is calculated by dividing the overhead allocated to each department by the direct labor hours used by each department. For Department K, the overhead allocation rate is calculated by dividing $200,000 by 3,800 direct labor hours, which equals $52.63 per hour. For Department Q, the overhead allocation rate is calculated by dividing the remaining overhead of $650,000 by the 6,200 direct labor hours used by the department, which equals $104.84 costs per hour. To calculate the total factory overhead, the following formula is used:Total Factory Overhead = (Department K Overhead + Department Q Overhead) / (Total Direct Labor Hours Used) Total Factory Overhead = ($200,000 + $650,000) / (3,800 + 6,200) Total Factory Overhead = $850,000 / 10,000 .Total Factory Overhead = $85.00 per hour

Learn more about costs here:

https://brainly.com/question/19075809

#SPJ4

Each visit, Olivia ordered a sandwich and left a $2. 25 tip. She spent a total of $39. Therefore, an equation that represents this situation, if c represents the cost of a salad is  4(x+2.25) = 39.

Equation:

An equation is a formula that expresses that two expressions are equal by joining them with the equal sign =.The word comparison and its cognates in other languages ​​may have subtly different meanings; for example, in French, an equation is defined to contain one or more variables, and in English any well-formed formula composed of two expressions linked by equal signs is an equation.

According to the Question:

Let the cost of each salad = c

Therefore we can write

    4(x+2.25) = 39

or, x+ 2.5 = 39

or, x = 39 − 2.5

or, x = 39 − 2.5

or, x = 26.5

Therefore, The equation that represents this situation, if c represents the cost of a salad is 4(x+2.25) = 39.

Learn more about Equation:

https://brainly.com/question/29538993

#SPJ4

The point (-3, 4) satisfies all the given conditions, and hence, it is the point we are looking for. The integer in Quadrant II.

An ordered pair of integers (x, y), where x is the horizontal coordinate or the abscissa and y is the vertical coordinate or the ordinate, is used to represent a point in the Cartesian plane. With regard to the x-axis and y-axis, a point on the plane may be located using these coordinates.

Let's assume that the point has coordinates (-x, y), where x > 1 and y > 2.

Then, using the distance formula, we have:

r = √(x² + y²)

Since r > -3, we have:

√(x² + y²) > -3

x² + y² > 9

Now, absolute values of the coordinates is 5, we have:

|x| + |y| = 5

Since x < -1, we have -x > 1, which means that:

|x| = -x -1

Substituting this into the equation above, we get:

(-x - 1) + |y| = 5

|x| + |y| = 5

Subtracting -x - 1 from both sides, we get:

|y| = x + 6

Substituting this into the equation x² + y² > 9, we get:

x² + (x + 6)² > 9

2x² + 12x + 27 > 0

This inequality holds for all x.

Therefore, the point (-3, 4) satisfies all the given conditions, and hence, it is the point we are looking for. The integer in Quadrant II.

Learn more about cartesian plane here:

https://brainly.com/question/27927590

#SPJ1

Answer:17

Step-by-step explanation:

The original price of the shoes was $26.

A coupon is a voucher or a code that can be used to get a discount or a special offer when making a purchase.

Let the original price of the shoes be x.

According to the problem, Martin gets a discount of $3 on the original price, so he pays (x - 3) dollars.

Then, the store takes 20% off the reduced price, which means Martin pays 80% of (x - 3) dollars.

We can write this information as an equation:

0.8(x - 3) = 18.4

Simplifying:

0.8x - 2.4 = 18.4

0.8x = 20.8

x = 26

Therefore, the original price of the shoes was $26.

Learn more about coupon here : brainly.com/question/28176129

#SPJ1

The given first-order differential equation is linear in the indicated dependent variable because it matches the standard form of a linear first-order differential equation, a1(x) dy/dx + a0(x)y = f(x).

First, let us review what a linear first-order differential equation is. Ais a differential equation that can be written in the form:

a1(x) dy/dx + a0(x)y = f(x)

Now, let us compare the given differential equation to the standard form of a linear first-order differential equation. The given differential equation is:

a1(x) dy/dx + a0(x)y

As we can see, the given differential equation matches the standard form of a linear first-order differential equation. Therefore, we can conclude that the given differential equation is linear in the indicated dependent variable.

In conclusion, the given first-order differential equation is linear in the indicated dependent variable because it matches the standard form of a linear first-order differential equation, a1(x) dy/dx + a0(x)y = f(x).

To know more about linear first-order differential equation, click the link below :

https://brainly.com/question/30645878#

#SPJ11

Option B is the correct answer.

The correct answer to the given question is Option B, which is "I would replace the missing values with the average value of that specific variable."What are Data Preparation activities?Data preparation activities consist of operations that change the quality, consistency, or completeness of data. These are performed to improve the data's accuracy and, as a result, the resulting insights.When it comes to numerical data, there are certain techniques you can use to deal with missing data. There are many ways to deal with missing numerical data, but one of the simplest is to use the mean or median value of the dataset to replace the missing values. This method is also known as mean imputation.Therefore, if during the data preparation activities, you have identified a small amount of missing numerical data, you should replace the missing values with the average value of that specific variable. Therefore, Option B is the correct answer. The other options such as excluding all observations with missing data, excluding all variables with missing data, and none of the above is true are not accurate.

Learn more about Preparation activities

brainly.com/question/14035022

#SPJ11

a) The function S(t) that inputs the number of minutes since the ice was removed from the freezer and outputs the side length of the cube in the salt is S(t) = 3 - 0.5t cm.

b) S(t) = 0 when t = 6 min, which means that the ice cube in the salt has melted completely.

c) The function P(t) that inputs the number of minutes since the ice was removed from the freezer and outputs the side length of the other cube is P(t) = 3 - 0.1t cm.

d) The function V(x) that inputs the side length x of an arbitrary cube and outputs the volume of that cube is V(x) = x^3 cm^3.

e)

(i) P(2) makes sense and represents the side length of the other cube 2 min after it was removed from the freezer.

(ii) V(S(5)) makes sense and represents the volume of the cube in the salt 5 min after it was removed from the freezer. (iii) P(S(1)) does not make sense because the P and S functions take a time value, not a side length.

To know about cubes refer here:

https://brainly.com/question/22628487?referrer=searchResults

#SPJ11

Answer: 5

Step-by-step explanation:

Using the law of similar triangles,

x/x-2 = x+(x+5)/x+1+x-2

x/x-2 = 2x+5/2x-1

x(2x-1) = x-2(2x+5)

2x²-x = 2x²+x-10

2x²-2x² + x +x -10 = 0

2x-10 = 0

2x = 10

x = 5

Hope this helps! :)

The expression - x - 3x + 5x + 10x - 4x + 4x simplifies to x.

If we group the like terms, we have:

(-1-3+5+10-4+4)x

An expressiοn in math is a sentence with a minimum οf twο numbers οr variables and at least οne math οperatiοn. This math οperatiοn can be additiοn, subtractiοn, multiplicatiοn, οr divisiοn.

Simplifying the terms inside the parentheses, we have:

1x

And simplifying further, we have the:

x

Therefore, the expression - x - 3x + 5x + 10x - 4x + 4x simplifies to x.

Learn more about expression

https://brainly.com/question/16804733

#SPJ1

The perimeter of the triangle present in above figure is 42 dm. Then the value of x is equals to the 9 dm and all three sides of triangle are 9 dm, 11 dm and 22 dm.

We have a triangle present in above figure. The perimeter is the length of the boundaries of a shape. A triangle is a type of polygon with three sides. In other words, it is a closed two dimensional shape having three straight sides. So, perimeter of a triangle = sum of all three sides. Here, perimeter of triangle = 42 dm

Now, first side length of triangle= (3x - 5 ) dm

Second side length = (x + 2) dm

Third side length = x dm

Now, using perimeter formula for triangle,

=> 3x - 5 + x + x + 2 = 42

=> 5x = 42 + 5 - 2 = 45

=> x = 45/5 = 9

3x - 5 = 22 dm

x + 2 = 11 dm

So, sides of triangle are 9 dm, 11 dm and 22 dm.

For more information about perimeter of triangle, visit :

https://brainly.com/question/29244577

#SPJ4

Complete question :

The perimeter of the triangle is 42 dm. By determining the measure of its sides, he obtains that the value of x is _? see the above figure

The value of z can be determined by solving the equation 7z-94 = 2z+76, which yields z=35.

To determine the value of z in the given equation, it is necessary to solve the equation 7z-94 = 2z+76. Begin by subtracting 2z from both sides of the equation, which yields 7z-2z-94 = 76. Simplifying this yields 5z-94 = 76. To solve for z, add 94 to both sides of the equation, which yields 5z = 170. Dividing both sides by 5 yields z = 34. Since the equation is not asking for an exact value, it can be rounded to the nearest whole number, which is 35. Therefore, the value of z is 35.

Learn more about equation here

https://brainly.com/question/649785

#SPJ1

logbA = 2.817 and logbB = 0.106 need to be used to find logb A/BA. We know that logarithms are important in mathematics and help us to solve complex problems involving exponents or roots.

They are expressed in terms of the logarithm base, which is the number or expression that is being raised to a power. It can be solved using the quotient rule of logarithms which states that logb (x / y) = logb x - logb y.

Explanation:
The given values are: logbA = 2.817 and logbB = 0.106Let us first use the quotient rule of logarithms to simplify the expression logb A/BA = logb A - logb BA. Using this rule, we get:

logb A/BA = logb A - logb B
Now we can substitute the given values in the above expression:

logb A/BA = 2.817 - 0.106
= 2.711

Therefore, the value of logb A/BA is 2.711. Hence, option (D) 2.711D is the correct answer.

For further information on Logarithms, refer below:

https://brainly.com/question/30085872

#SPJ11

Answer:

4+3=7

4/7*72/1=288/7=41.1

3/7*72/1=216/7=30.9

41.1:30.9=4:3

Answer:

Step-by-step explanation:

1: Quadratic

2: Exponential

3. None

Answer:

(1.2075)

Step-by-step explanation:

Lets assume we are increasing a price on a $100 item to help visualize the steps.

The two steps of 5% and then 15% can each be expressed as:

5%:  (1+0.05)  [The 1 represents the fact that the final cost is full price (1) plus 5%(0.05)]

15%  (1+0.15)   [Same explanation, but now with 0.15 for 15%]

We can apply these factors individually:

Assume a base of $100:

5% increase would make it $105  [$100*(1.05)=$105]

15% increase:  On top of the 5%, we would go to:  $105*(1.15) = $120.75

Or we can use a single multiplier.

If we look at the steps from above, we see that the algebra consisted of taking the origianl price ($100) and multiplying it twice:  once with (1+0.05) and once with (1+1.15).  Write this in the form of an equation:

  ($100)*(1+0.05)*(1+0.15) = $120.75

Let's multiply (1+0.05)*(1+0.15)

                       = (1.2075)

We can use this single factor (multiplier) to find the correct/same value as before:

              (1.2075)($100) = $120.75

If the transformation is written in the form y = a(x - p)² + q, the values of a, p, and q include the following: a = 2, p = -4, q = 3.

Mathematically, the standard equation of the directrix lines for any parabola is given by this mathematical expression:

y = a(x - h)² + k.

Where:

Based on the information provided about the parabola, we have the following:

Scale factor, a = 2.

Vertical translation upward, q = 3.

Horizontal translation to the left, p = -4.

Therefore, the equation becomes;

y = a(x - h)² + k.

y = a(x - (-4))² + 3.

y = a(x + 4)² + 3.

Read more on parabola here: brainly.com/question/27814369

#SPJ1

Answer:2

Step-by-step explanation:

we know that the side are the same

[tex]\sqrt{2} ^{2} +\sqrt{2} ^{2} =y^{2}[/tex]

[tex]2+2=y^{2}[/tex]

[tex]\sqrt{4} =y[/tex]

[tex]2=y[/tex]

the value of a is -7/4.

Simply change x in the original equation to -1/4 to determine the value of a:

y = 4x² - 7x - 2

y = 4(-1/4)² - 7(-1/4) - 2

y = 1 - (-7/4) - 2

y = 1/4 - 2

y = -7/4

Mathematically, an equation can be defined as a statement that supports the equality of two expressions, which are connected by the equals sign “=”

Two expressions are combined in an equation using an equal symbol ("="). The "left-hand side" and "right-hand side" of the equation are the two expressions on either side of the equals sign. Typically, we consider an equation's right side to be zero. As we can balance this by deducting the right-side expression from both sides' expressions, this won't reduce the generality.

from the question:

We must discover a solution for x before we can find the solutions to the equation y = 4x2 - 7x - 2. By calculating the quadratic equation while putting y equal to zero, we can achieve this:

4x² - 7x - 2 = 0

(4x + 1)(x - 2) = 0

This quadratic equation has two solutions:

4x + 1 = 0 or x - 2 = 0

4x = -1 or x = 2

x = -1/4 or x = 2

As a result, the equation has solutions a = -1/4 and b = 2, where a b.

Simply change x in the original equation to -1/4 to determine the value of a:

y = 4x² - 7x - 2

y = 4(-1/4)² - 7(-1/4) - 2

y = 1 - (-7/4) - 2

y = 1/4 - 2

y = -7/4

Therefore, the value of a is -7/4.

to know more about equations visit:

https://brainly.com/question/10413253

#SPJ1

The number of medals did the United States win is 97 using the equation x + (x + 9) = 185.

Let x be the number of medals Russia won in the 2000 Summer Olympics. Then, since the United States won 9 more medals than Russia, the number of medals the United States won is x + 9.

Together, they won 185 medals, so we can write the equation:

x + (x + 9) = 185

Simplifying the left side, we get:

2x + 9 = 185

Subtracting 9 from both sides:

2x = 176

Dividing both sides by 2:

x = 88

So Russia won 88 medals, and the United States won 88 + 9 = 97 medals.

Therefore, the United States won 97 medals in the 2000 Summer Olympics.

Learn more about the equation at

https://brainly.com/question/8268502

#SPJ4

The side length of a square with an area of 49 square centimeters is 7 centimeters.

Area is a measurement of the amount of space inside a 2-dimensional shape, such as a rectangle, square, triangle, circle, or any other polygon

The area of a square is calculated by multiplying its length by its width. For a square, however, its length and width are equal.

So, if we let "x" be the side length of the square, we can express the area as,

x^2 = 49

To solve for x, we can take the square root of both sides of the equation:

sqrt(x^2) = sqrt(49)

x = 7 centimeter

Learn more about area here

brainly.com/question/293202

#SPJ4

The amount in the account after 5 years would be $137.

Continuous compound interest is a method of calculating the interest earned on a principal amount that is continuously reinvested

We can use the formula for continuous compound interest:

A = Pe^(rt)

where:

A = final amount

P = principal amount

e = Euler's number (approximately 2.71828)

r = annual interest rate (as a decimal)

t = time in years

In this case, we have:

P = $110

r = 0.041 (4.1% expressed as a decimal)

t = 5 years

Substituting these values into the formula, we get:

A = 110e^(0.0415)

A ≈ $136.69

Learn more about continuous compound interest here

brainly.com/question/29080027

#SPJ4