Clear my choice
Which expression is equivalent to
(-√8 -√2) + √-36

Answers

Answer 1

The expression equivalent to (-√8 -√2) + √-36 is -3√2 + 6i.

What are complex numbers?

A real number and an imaginary number are effectively combined to create a complex number. The complex number is written as a+ib, where a and ib are real and imaginary numbers, respectively. Additionally, I = -1 and both a and b are real numbers.

Consequently, a complex number is a straightforward illustration of the addition of two integers, specifically a real number and an imaginary number. It consists of two parts: one that is entirely real, the other entirely fantastical.

The given expression is:

(-√8 -√2) + √-36

The expression can be written as:

(-2√2 - √2) + √(i)²(6)²

Taking the common term:

√2(-2 - 1) + 6i

Simplifying the expression:

-3√2 + 6i

Hence, the expression equivalent to (-√8 -√2) + √-36 is -3√2 + 6i.

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Related Questions

Which of the following services will be provided by a full-service broker but not by a discount broker?

I. Research of potential investment opportunities
II. Purchase and sale of stock at your request
III. Recommendation of investments
a.
I and III
b.
II only
c.
III only
d.
I, II, and III


Please select the best answer from the choices provided

A
B
C
D

Answers

Option A i.e. the first and the third service will be provided by a full-service broker but not by a discount broker.

What is meant by a broker?

An impartial party whose services are often used in several businesses is a broker. The main duty of a broker is to connect buyers and sellers; as a result, the broker acts as a neutral intermediary between a buyer and a seller.

The services which will be provided by a full-service broker but not by a discount broker are

Option I. Research of potential investment opportunities

Option III. Recommendation of investments

For any form of investment, research and recommendations are key and important components. Before you make any investments, you should conduct adequate research.

Hence, option A i.e. the first and the third service will be provided by a full-service broker but not by a discount broker.

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A square is cut from a rectangle. The side length of the square is half of the unknown width w. The area of the shaded region is 84 square inches. Write an equation you can use to find the width (in inches).

Answers

On solving the provided question we cans ay that The side of the square is w/2, then its area is: A = (w/2)² = w²/4

what is a square?

A square is an equilateral quadrilateral with four equal sides and four equal angles according to Euclidean geometry. It is also known as a rectangle with two neighboring sides that have the same length. Having all four equal sides and all four equal angles, a square is an equilateral quadrilateral. 90 degree or straight angles are square angles. In addition, the square's diagonals are equally spaced and split at a 90-degree angle. a neighboring rectangle with two equal sides. a quadrilateral with four right angles and four sides of equal length. a parallelogram having two adjacent, equal sides that form a right angle. straight-sided rhombus.

The side of the square is w/2, then its area is:

A = (w/2)² = w²/4

The darkened region represents the difference between the square's and rectangle's areas:

[tex]14w - w^2/4 = 84\\56w - w^2 = 336\\w^2 - 56w + 336 = 0[/tex]

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Use the Slope Formula to calculate the slope of a line with these two points. Find the slope of the line that passes through (5, 4) and (10, 6). m = rise run 92 – 91 X2 - X1 Simplify your answer and write it as a proper fraction, improper fraction, or integer​

Answers

The slope of a line can be calculated using the formula:

m = (y2 - y1) / (x2 - x1)

where (x1, y1) and (x2, y2) are two points on the line.

For the line passing through (5, 4) and (10, 6), we have:

m = (6 - 4) / (10 - 5)
m = 2 / 5

So, the slope of the line is 2/5, which can be written as a proper fraction.

a sample of 900 computer chips revealed that 43% of the chips do not fail in the first 1000 hours of their use. the company's promotional literature states that 40% of the chips do not fail in the first 1000 hours of their use. the quality control manager wants to test the claim that the actual percentage that do not fail is different from the stated percentage. is there enough evidence at the 0.05 level to support the manager's claim?

Answers

Answer:

I think a is the right answer

A rectangular prism is 3 yards long, 2 yards wide, and 12 yards high. What is the surface area of the rectangular prism?

Answers

The total surface area of the rectangular prism is 24 * 2 + 36 * 2 + 6 * 2 = 72 + 72 + 12 = 156 square yards.

The surface area of a rectangular prism is given by the sum of the areas of its six faces. To find the surface area of a rectangular prism that is 3 yards long, 2 yards wide, and 12 yards high, we need to find the area of each of its four rectangular faces and then add these areas together.

First, we find the area of the two faces that are 2 yards wide and 12 yards high. Each of these faces has an area of 2 * 12 = 24 square yards.

Next, we find the area of the two faces that are 3 yards long and 12 yards high. Each of these faces has an area of 3 * 12 = 36 square yards.

Finally, we find the area of the two faces that are 3 yards long and 2 yards wide. Each of these faces has an area of 3 * 2 = 6 square yards.

So, the total surface area of the rectangular prism is 24 * 2 + 36 * 2 + 6 * 2 = 72 + 72 + 12 = 156 square yards.

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What type of angle are these?

Answers

Answer:

alternate exterior angles

Step-by-step explanation:

congruent alternete exterior angles

Simplify.
Rewrite the expression in the form 8n.
(8−8)(8³) =

Answers

The above expression in terms of 8n can be written as 8(0).

What is expression?

An expression, often known as a mathematical expression, is a finite collection of symbols that are well-formed in accordance with context-dependent principles. A number, a variable, or a mix of numbers, variables, and operation symbols make up an expression.

We are given a an expression (8-8)(8³)

Now the first bracket after simplifying we get an answer is 0.

Hence the expression can be given in the form of 8(n) as 8(0)

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Solve the value for k:
[tex]\displaystyle{\lim_{x\to \infty} \left(1+\dfrac{65}{x}\right)^{3x} = e^k}[/tex]

Answers

The value of k in the exponential function is -3.

What is the value of k in the exponential function?

Taking the natural logarithm of both sides of the equation, we have:

ln [ (1 + 65/x)^(3x) ] = ln(e^k)

Using the properties of logarithms, we can simplify the left side of the equation:

3x ln(1 + 65/x) = k

Taking the limit as x approaches infinity, we have:

lim (x → ∞) 3x ln(1 + 65/x)

= lim (x → ∞) [ln(1 + 65/x) / (1/x)] × 3

Using L'Hopital's rule, we can evaluate the limit:

lim (x → ∞) [ln(1 + 65/x) / (1/x)]

= lim (x → ∞) [-65 / (x(1+65/x))]

= -65/65

= -1

Therefore, we have:

lim (x → ∞) 3x ln(1 + 65/x)

= lim (x → ∞) [ln(1 + 65/x) / (1/x)] × 3

= -3

Thus, the exponential equation simplifies to:

-3 = k

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We have the expression:

[tex]\displaystyle{\lim_{x\to \infty} \left(1+\dfrac{65}{x}\right)^{3x} = e^k} \\[/tex]

As [tex]\displaystyle{x\to \infty} \\[/tex], the term [tex]\displaystyle{\dfrac{65}{x}} \\[/tex] approaches 0. Therefore, we can rewrite the expression as:

[tex]\displaystyle{\lim_{x\to \infty} \left(1+\dfrac{65}{x}\right)^{x \cdot \dfrac{3x}{65}} = e^k} \\[/tex]

Simplifying the exponent, we get:

[tex]\displaystyle{\lim_{x\to \infty} \left(1+\dfrac{65}{x}\right)^{\dfrac{3x^2}{65}} = e^k} \\[/tex]

Now, as [tex]\displaystyle{x\to \infty} \\[/tex], the expression [tex]\displaystyle{\left(1+\dfrac{65}{x}\right)^{\dfrac{3x^2}{65}}} \\[/tex] approaches [tex]\displaystyle{e^{-3}} \\[/tex].

Therefore, we have:

[tex]\displaystyle{e^k = e^{-3}} \\[/tex]

Comparing the exponents, we can conclude that:

[tex]\displaystyle{k = -3} \\[/tex]

Hence, the correct value of k is indeed -3.

-12,1 and x,7 when m = 1/8

Answers

The x has a value of 36. The line's two points are (-12, 1) and (36, 7).

The purpose of slope calculation?

The slope of a line frequently represents the steepness and direction of the line. The slope of a straight line between the two locations, (x1,y1) and (x2,y2), can be easily determined by calculating the difference between their coordinates.

We can apply the slope formula to determine the value of x:

m is the slope and (x1, y1) and (x2, y2) are two points on the line, with m = (y2 - y1) / (x2 - x1).

We are given the point (x1, y1) = (-12, 1) and the slope m = 1/8. We are also given the y-coordinate of the other point as y2 = 7.

Plugging in the known values, we get:

1/8 = (7 - 1) / (x - (-12))

Simplifying and solving for x, we get:

1/8 = 6 / (x + 12)

1 = 48 / (x + 12)

x + 12 = 48

x = 36

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Triangle JGR is similar to triangle MST. Which
statement is not always true?
A. LJ LM
C. LR LT
B. LG LT
D. LG LS

Answers

The angle corresponding to each other of the different triangles are equal. The correct option is D.

What is a similar triangle?

"Similar triangles are triangles that have the same shape but differ in size. Similar objects include all equilateral triangles and squares with any side length. In other words, if two triangles are similar, their corresponding angles and sides are congruent and in equal proportion ".

Here given, ΔJGR is similar to a triangle ΔMST

So, from the definition of a similar triangle,

angle J ≅ angle M

angle G ≅ angle S

angle R ≅ angle T

Hence, option D is correct.

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what is the solution to 4+5ex+2=11?​

Answers

The solution to the equation is (a) x = ln(7/5) - 2

How to determine the solution to the equation

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

4 + 5e^(x + 2) = 11

Evaluate the like terms in the equation

So, we have the following representation

5e^(x + 2) = 7

Divide through the equation by 5

This gives

e^(x + 2) = 7/5

Take the natural logarithm of both sides

x + 2 = ln(7/5)

So, we have

x = ln(7/5) - 2

Hence, the solution is x = ln(7/5) - 2

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7y² - 13y + 2 = 0
2.1.1 Solve for y. Round your answer to two decimal places.

Answers

The solution of the quadratic equation for y is given as follows:

y = 0.17 and y = 1.69.

How to solve the quadratic equation?

The quadratic equation for this problem is defined as follows:

7y² - 13y + 2 = 0.

The coefficients are given as follows:

a = 7, b = -13 and c = 2.

Hence the discriminant is of:

D = (-13)² - 4 x 7 x 2

D = 113.

The first root is of:

y = (13 + sqrt(113))/14

y = 1.69.

The second root is of:

y = (13 - sqrt(113))/14

y = 0.17.

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When I add a number to another number four times as big the results is 30, find the first number

Answers

By using a system of equations of two variables we concluded that the first number was 6

Let the numbers be x and y and their sum gives z

The equation for the sum of 2 numbers:

                                             x + y = z    -(1)

We know, z = 30 and y = 4 times x = 4x

Putting values of y and z in equation (1), we get

                                             x + 4x = 30

Solving for x, we get

                                                  5x = 30

                                         x = 30/5 = 6

To get the value of y, put the value of x in y = 4x and we get

                                          y = 4 x 6 = 24

So the real equation was

                                              6 + 24 = 30

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on friday, terry completes a self-monitoring scale and receives a score of 49. on the following tuesday, he fills out the scle again and receives a score of 28. terry's scores on this self-monitoring scale do not appear to be

Answers

If on the following Tuesday, Terry fills out scale again and receives a score of 28 , then Terry's scores on the Self-Monitoring Scale do not appear to be Reliable .

The Terry's scores on the Self-Monitoring Scale do not appear to be reliable, because there is a significant difference between his score on Friday and his score on the following Tuesday.

The Reliability is defined as the consistency of measurement over time or across different conditions.

In this case, if Terry's scores on the Self-Monitoring Scale were reliable, we would expect them to be consistent or stable over time.

However, his score on Tuesday is significantly lower than his score on Friday suggests that there may be some inconsistency in his responses .

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Find the prime factorization of
the number 90.
Order the factors from least to greatest.
Remember, 1 is not a prime number.
[?] × [ ] × [ ] × [ ]
X
X
Enter the number that belongs in the green box.

Answers

Answer:

2

Step-by-step explanation:

the prime factorization of the number 90 is

2, 3, 3, 5

what is 5.4772 rounded to the nearest whole number

Answers

Answer:

5

Step-by-step explanation:

5.4772

To round to the nearest whole number, look at the number to the right of it (4)     if     5 or greater round the 5 up to '6'    o/w   leave it as '5'

5.4772 rounded to the nearest tenth is 5

3 days is 72 hours in those 72 hours i slept 12. 5% how many hours did i sleep in those three days?

Answers

You slept for 9 hours in those three days, calculated by multiplying 12.5% of the total hours (72) by 72, which equals 9.

To calculate the number of hours slept in three days, we first need to determine how many hours there are in three days.

As given, 1 day has 24 hours. So, three days will have 3 x 24 = 72 hours.

Now, we are told that you slept for 12.5% of those 72 hours. To calculate this, we multiply the percentage by the total number of hours:

12.5% x 72 hours = (12.5/100) x 72 = 0.125 x 72 = 9 hours

Therefore, you slept for 9 hours in those three days.

Percentage is a way to express a proportion or ratio as a fraction of 100. The sign "%" is widely used to represent it. For example, if you had 20 apples and you ate 5 of them, you would have consumed 25% of the apples (5 out of 20).

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How many solutions does this system have?
Answers:
None
1
2
3
Infinite

Answers

Answer is infinite solutions

Explanation

These are all the same lines so there are infinite many solutions

Eq#2 and 3 can be reduced to be the same as equation 1

4x - 6y + 2z =4
Divide all by 2

2x - 3y + z = 2 same as equation 1

6x -9y + 3z = 6
Divide all by 3

2x -3y + z = 2 same as equation 1

Anthony makes 6 1/8 gallons of lemonade for a family picnic. His family drinks 2 1/4 gallons of the lemonade. Which of these containers is the SMALLEST Anthony can use to store the remaining lemonade?

Answers

Answer:

3 and 7/8 gallons remaining

Step-by-step explanation:

You did not give the container options, but hopefully this will help

96 Vistors in 6 Hours. How many visitors per hour?

Answers

Answer:

16 visitors per hour

Step-by-step explanation:

96/6 = 16

Answer:
16
Explanation:
To calculate the average number of visitors per hour, we need to divide the total number of visitors by the number of hours.

In this case, 96 visitors in 6 hours means an average of 96 / 6 = 16 visitors per hour.

Solve the word problem below. Enter your answer in simplest terms, using the
slash (/) to represent the fraction bar.
A recipe for a soup calls for 2/4 cup of chopped onion and 1/6 cup of chopped
celery. What is the total amount of celery and onion needed for the soup

Answers

Answer:

2/3 cups

Step-by-step explanation:

The recipe calls for 2/4 cup of onion and 1/6 cup of celery. To find the total, we need to add the two fractions together; the amount of onions(2/4 cup or 1/2 a cup if simplified), and the amount of celery(1/6). To do this, we need to find a common denominator. We can do this buy finding a common multiple between 2 and 6.

Multiples of 2: 2, 4, 6, 8, 10, 12...

Multiples of 6: 6, 12, 18, 24, 30...

A common multiple is 6. 1/2x3/3=3/6 <--- an equivalent fraction of 1/2

Now both fractions have the same denominator:

Onions: 3/6

Celery: 1/6

3/6+1/6 = 4/6

4/6 simplifies to 2/3.

The total amount of celery and onion need for the soup is 2/3 cup

Answer:

2/3 cups

Step-by-step explanation:

The correspondence f: X- Yis defined by the function ((-18, -31), (-9, -23), (4, 2), (11, 5), (14, 12)). Consider the
correspondence g that includes the ordered pairs of f.
Which additional ordered pairs can be included in g, assuming g is a function. SELECT ALL THAT APPLY.
A(-9, 11)
B (-7,-10)
C (5, 12)
D (4, 15)
E (14,20)

Answers

Answer:

B. (-7, -1)

C. (5, 12)

Step-by-step explanation:

A function can only have one output for a specific input

In math terminology that means if y = f(x) is a function of x then the mapping from x to y is 1:1

Or,

For a specific value of x, there can be one and only one value for y

This is often referred to as a vertical line test; if a vertical line parallel to the y-axis is drawn for any x value it should intersect the function graph at one and only one point

g(x) includes all the ordered pairs of f(x) therefore the ordered pairs of g(x) are:
{ ( -18, -31), (-9, -23), (4, 2), (11, 5), (14, 12) }

Looking at the answer choices:
A. (-9, 11) will violate the 1:1 correspondence between x and y since (-9, -23) is already a pair

B. (-7, -1) is OK. There is no other entry with x = -7

C. (5, 12) is OK. There is no other entry with x = 5

D. (4, 15) will violate; there is already an entry for x = 4: (4, 2)

E.  (14,20). This will also violate the properties of a function since there exists an entry for x = 14, namely (14, 20)

Perform the operation and simplify the resulting fraction: 7/3a - 8/5 + 4/15a

Answers

After solving the given expression 7/3a - 8/5 + 4/15a, the resultant answer is fractions is 39/15a - 8/5.

What are fractions?

A fraction in mathematics is a number that is stated as a percentage, such as 1/2 or 2/3.

The number on top denotes the component of the unit under consideration, while the number at the bottom indicates the total number of parts that make up one unit.

An element of a whole is a fraction.

The number is represented mathematically as a quotient, where the numerator and denominator are split. Both are integers in a simple fraction.

A fraction appears in the numerator or denominator of a complex fraction.

So, we have the operations:

7/3a - 8/5 + 4/15a

Now, solve as follows:

7/3a - 8/5 + 4/15a

7/3a + 4/15a - 8/5

7*5 + 4 /15a - 8/5

39/15a - 8/5

Therefore, after solving the given expression 7/3a - 8/5 + 4/15a, the resultant answer is fractions is 39/15a - 8/5.


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A person on a moving sidewalk travels 28 feet in 7 seconds. The moving sidewalk has a length of 200 feet. How long will it take to move from one end to the other?

Answers

It will take 50 seconds for the person to travel from one end to the other at the current speed.

How long will it take to move from one end to the other?

We know that the person travels 28 feet in 7 seconds, remember that speed is defined as the quotient between distance and time, then the person's speed is:

s = 28ft/7s = 4ft/s

Now we want to find the time T that it takes for the person to travel the 200 feet of the sidewalk, then we need to solve:

(4ft/s)*T = 200ft

T= 200ft/(4 ft/s) = 50s

It takes 50 seconds.

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what do you get when you remove all the perfect squares of √39y^ 9?

Answers

For removing all the perfect squares of √(39y^9), we need to factor out any perfect squares from the expression under the square root.

What is a Perfect Square and how to remove all the perfect squares?

To get rid of all the perfect squares in (39y9), factor out any perfect squares in the expression under the square root.

First, by factoring 39 and y9, we can simplify the expression under the square root:

[tex]√(39y^9) = √(313y^8y) = √(313*(y^4)^2*y)[/tex]

Because (y4)2 is a perfect square, we can take it out from under the square root:

[tex]√(39y^9) = √(313(y^4)^2y) = (y^4)√(313*y)[/tex]

By removing all of the perfect squares from (39y9), we get:

[tex](y^4)√(313y)[/tex]

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John wants to have 600 copies. His local print shop charges $10 for the First 200 copies and $15 for every additional 100 copies

Part A: How much will the 600 copies cost, including a sale tax of 6%?
Part B: If the number of sets of 100 is represented by x, write an equation to express the cost, y.
Part C: Use the equation to determine the cost of 900 copies. Include the 6% sales tax in the total final cost.

Answers

The cost of 600 copies is  $90.10

The cost of 900 copies is $137.80.

The equation that expresses cost is y = 1.06 x ($10 + $15x)

What is the equation that expresses cost?

The equation that represents the information in the question is:

Total cost = 1 + sales tax x [cost of the first 100 copies + (x x cost of every additional 100 copies)]

y = 1.06 x ($10 + $15x)

Cost of 600 copies:

x = (600 - 100) / 100 = 500 / 100 = 5

y = (1 + 6/100) x [$10 + (5 x $15)]

y = 1.06 x [$10 + $75)

y = 1.06 x $85

y = $90.10

Cost of 900 copies:

x = (900 - 100) / 100 = 800 / 100 = 8

y = (1 + 6/100) x [$10 + (8 x $15)]

y = 1.06 x [$10 + $120)

y = 1.06 x $130

y = $137.80

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Nakeisha is trying to pick out an outfit for the first day of school. She can choose from 2 pairs of pants, 6 t-shirts, and 3 pairs of shoes. How many different outfits does Nakeisha have to choose from?

Answers

Answer:

Step-by-step explanation:

multiply all numbers together

2 x 6 x 3 = 36

2. Find the number of ways in which 9 different computer games can be shared out between Wendy, Jim and Hannah so that each person receives an odd number of computer games.

Answers

Using combinatorics, there are 1926 ways to distribute 9 different computer games among Wendy, Jim, and Hannah so that each person receives an odd number of games.

What is the number of ways the game is shared between them

If each person receives an odd number of games, then the number of games must be 1, 3, 5, or 7. There are four odd numbers to choose from.

We can use combinatorics to find the odd number in each turn.

Let's consider each odd number in turn.

If each person gets 1 game, then we are looking for the number of ways to choose 3 games out of 9 to distribute. This is simply the number of combinations of 3 things taken from a set of 9 things, which is 9C3, or (9!)/(3!6!) = 84.

If each person gets 3 games, then we are looking for the number of ways to choose 3 games out of 9 to distribute to one person. Once those games have been chosen, we are left with 6 games to distribute to the other two people. The number of ways to choose 3 games out of 9 is again 84, but we must multiply this by the number of ways to choose 3 games out of the remaining 6. This is 6C3, or (6!)/(3!3!) = 20. Therefore, the total number of ways to distribute 9 games with each person getting 3 games is 84*20 = 1680.

If each person gets 5 games, then we are looking for the number of ways to choose 5 games out of 9 to distribute to one person. Once those games have been chosen, we are left with 4 games to distribute to the other two people. The number of ways to choose 5 games out of 9 is 126, and the number of ways to choose 4 games out of the remaining 4 is 1. Therefore, the total number of ways to distribute 9 games with each person getting 5 games is 126*1 = 126.

If each person gets 7 games, then we are looking for the number of ways to choose 7 games out of 9 to distribute to one person. Once those games have been chosen, we are left with 2 games to distribute to the other two people. The number of ways to choose 7 games out of 9 is 36, and the number of ways to choose 2 games out of the remaining 2 is 1. Therefore, the total number of ways to distribute 9 games with each person getting 7 games is 36*1 = 36.

Adding up the number of ways to distribute the games in each case, we get 84 + 1680 + 126 + 36 = 1926.

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The box plot represents the number of tickets sold for a school dance.

A horizontal line labeled Number of Tickets sold that starts at 8, with tick marks every one unit up to 30. The graph is titled Tickets Sold for A Dance. The box extends from 17 to 21 on the number line. A line in the box is at 19. The lines outside the box end at 10 and 27.

Which of the following is the appropriate measure of variability for the data, and what is its value?

The IQR is the best measure of variability, and it equals 17.
The range is the best measure of variability, and it equals 4.
The IQR is the best measure of variability, and it equals 4.
The range is the best measure of variability, and it equals 17.

Answers

Answer:

the iqr is the best measure of variability

The IQR is the best measure of variability, and it equals 4.

Option C is the correct answer.

What is the interquartile range?

An interquartile range is a measure of the difference between the upper and lower quartiles of a dataset.

W can find the values of the upper and lower quartile and median from a box plot.

The middle line is the median and the first line is the lower quartile and the last line is the upper quartile.

The formula used is Upper quartile - Lower quartile.

We have,

The appropriate measure of variability for the data is the interquartile range (IQR), which is the range of the middle 50% of the data.

In other words, it is the difference between the third quartile (Q3) and the first quartile (Q1).

From the box plot, we can see that the box extends from 17 to 21 on the number line, with a line at 19 inside the box.

This means that Q1 is 17 and Q3 is 21.

The IQR is:

IQR = Q3 - Q1 = 21 - 17 = 4

Thus,

The IQR is the best measure of variability, and it equals 4.

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Find the cost per pound of a house blend of coffee that is made from 10 lb of Central American coffee that costs $9 per pound and 40 lb of South American coffee that costs $5.50 per pound.

Answers

The cost per pound of a house blend of coffee is $ 5 per pound.

What is the cost price?

The precise value that corresponds to the unit price paid is represented by the cost price. In some stock market theories, this value is utilized to establish the value of stock holdings and is used as a key determinant of profitability.

Here, we have

Weight of Central American coffee = 10 lb

Cost of Central American coffee = $7 per pound

Total value of Central American coffee = weight × cost = 10 ×7 = $ 70

Weight of South American coffee = 40 lb

Cost of South American coffee =  $ 4.50 per pound

Total value of Central American coffee = weight × cost = 40 ×4.50 = $ 180

Total weight of house blend coffee = Weight of Central American coffee + weight of South American coffee

= 10 +40 = 50 lb

The total value of house blend coffee = value of Central American coffee + value of South American coffee

= $ 70 + $ 180 = $ 250

Cost per pound of house blend coffee = ( total value of house blend coffee) / (total weight of house blend coffee)

= 250 / 50 = $ 5 per pound

Hence, the cost per pound of a house blend of coffee is $ 5 per pound.

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