Michelle collects US, Canadian and Mexican stamps. In her collection 80% of the stamps are U.S. and Mexican stamps. there are 3 times as many U.S. stamps as Mexican stamps. WHat percent of Michelle's collections is made up of U.S. stamps?

Answers

Answer 1
We know that 80% of the stamps are US and Mexican. 
The US stamps are 3 times the Mexican stamps. That means that of the 80%, Mexicans comprised of the 20% and US comprised of the 60% to satisfy the relationship of their ratios. 

Therefore, 60% of Michelle's collection is made up of US stamps.  
     
Answer 2

Final answer:

Michelle's stamp collection consists of 60% U.S. stamps, determined by solving equations based on the given information that U.S. and Mexican stamps make up 80% of her collection and there are three times as many U.S. stamps as Mexican stamps.

Explanation:

The student asked what percent of Michelle's stamp collection is made up of U.S. stamps if 80% are U.S. and Mexican stamps and there are 3 times as many U.S. stamps as Mexican stamps. To solve this, let's call the percentage of U.S. stamps 'U' and the percentage of Mexican stamps 'M'. According to the given information, U + M = 80%, and U = 3M.

We substitute the second expression into the first to get 3M + M = 80%, which simplifies to 4M = 80%. Dividing both sides by 4 gives M = 20%. As the number of U.S. stamps is three times the number of Mexican stamps, we calculate U as 3 × 20% = 60%. So, the percentage of U.S. stamps in Michelle's collection is 60%.


Related Questions

how much tax you need to pay on a taxable income of 40,000

Answers

It depends on if you are filing as a single person or married (or jointly), and for which year you are referring to:

2017 RETURNS FILED IN 2018:

Single earning in this tax bracket $37,951 to $91,900, the tax rate is 25%.

Married/Joint earning in this tax bracket $18,651 to $75,900, the tax rate is 15%.


2018 RETURNS FILED IN 2018:

Single earning in this tax bracket $38,701 to $82,500, the tax rate is 22%.

Married/Joint earning in this tax bracket $19,051 to $77,400, the tax rate is 12%.


Hope this helps! :)

If the graph of the function h is defined by = h(x)+x^2+9 is translated vertically downward by 9 units, it becomes the graph of a function g. Find the expression for
gx

Answers

The answer is g(x) = x².
Solution:
The graph of h(x) = x²+9 translated vertically downward by 9 units means that each point (x, h(x)) is shifted onto the point (x, h(x) - 9), that is, 
     (x, h(x)) → (x, h(x) - 9)
The translated graph that represents the function is defined by the expression for g(x):
     g(x) = h(x) - 9 = x² + 9 - 9 = x²

h(x) = x²+9 → g(x) = x² shows that the graph of the equation g(x) = x² moves the graph of h(x) = x²+9 down nine units.

Exercise 3.8 asked you to write a method called quadratic that solves quadratic equations and prints their roots. recall that a quadratic equation is a polynomial equation in terms of a variable x of the form a x2 + b x + c = 0. the formula for solving a quadratic equation is:

Answers

Given a quadratic equation which is a polynomial equation in terms of a variable x of the form ax^2+bx+c=0. The quadratic formula for solving a quadratic equation is:

x=[-b+/-√(b²-4ac)]/2a

where a,b and c are the respective coefficients as indicated in the quadratic form. 

Which events are independent? Check all that apply. rolling two number cubes at the same time choosing a card, and then flipping a coin choosing a first, second, and third place winner drawing a name from a hat, keeping it, then drawing another name drawing a marble from a bag, replacing it, then drawing another marble flipping the same coin three times

Answers

Answer:

1.rolling two number cubes at the same time

2.choosing a card, and then flipping a coin

5.drawing a marble from a bag, replacing it, then drawing another marble

6.flipping the same coin three times

Find the area of a regular hexagon whose side measure is 5 cm.

Answers

Side of the given Hexagon = 5cm

Area of the Hexagon
[tex] = ( \frac{3 \sqrt{3} \times 5 {}^{2} }{2} ) \: sq \: cm[/tex]

[tex] = \frac{75}{2} \sqrt{3 \:} sq \: cm[/tex]

in a survey of a town 56% of residents own a car, 21% of residesnts own a truck

Answers

77% of people own both cars and trucks, 23% of people own (something else).

Refer to the above data. in which year is there a balanced budget? year 1 year 2 year 3 year 4

Answers

The answer is year 2. Hope this helped

please show me how to answer this

Answers

Work on Both sides of the equation by doing the same thing on both sides. This will get your answer.

at 6am the temperature is -5°f the temperature rises 6°f by noon what is the temperature at noon?

Answers

By noon, it should be 1 degree Fahrenheit. 

(-5)+6=1
If you use a number line, and start from -5 and "count right 6 times", you should get 1 degree Fahrenheit.
Hope this helped!!! c:

Which of the following is the correct simplification of 7•4²÷ 8 -12

Answers

The answer you are looking for would be 2.

This can be found by solving with PEMDAS. First, you do the 4^2 (4*4), which equals 16. Next, you multiply 16 by 7, to get 112. Then, you'd divide 112 by 8. This gives you 14. Finally, subtract 12 from 14 to get your final answer of 2.

I hope this helps!
I’m not sure but I tried working it out and I got 2.26272819199.. so it should be 2

A dog kennel uses 90 lb of dog food per day. How many pounds are used in a year?

Answers

32850 pounds are used in a year.
The kennel would use 32850lbs in a year.

Bernard weighs 7.5 pounds at birth. assuming his development proceeds normally, he should weigh about _____ pounds by his first birthday. 22.5 24.5 20.5 18.5

Answers

Given Bernard weighs 7.5 pounds at birth.The question is asking us to assume that  Bernard development proceeds normally.We need to find Bernard birth after a year.

It is observed that birth of a child triples or is thrice (3 times ) the weight at birth.As Bernard is weighing 7.5 pounds so he will triple or be 3times of this weight.

Bernard weight after a year= 3x7.5=22.5 pounds.

Use part 1 of the fundamental theorem of calculus to find the derivative of the function. y = cos x (3 + v5)8 dv sin x

Answers

It looks like

[tex]y(x)=\displaystyle\int_{\cos x}^{\sin x}(3+v^5)^8\,\mathrm dv[/tex]

(If the limits are in the wrong order, just multiply the result by -1)

Split the integral at an arbitrary value between [tex]\cos x[/tex] and [tex]\sin x[/tex], and write [tex]y(x)[/tex] as

[tex]y(x)=\displaystyle\left\{\int_{\cos x}^c+\int_c^{\sin x}\right\}(3+v^5)^8\,\mathrm dv[/tex]

[tex]y(x)=\displaystyle\int_c^{\sin x}(3+v^5)^8\,\mathrm dv-\int_c^{\cos x}(3+v^5)^8\,\mathrm dv[/tex]

Then by the FTC,

[tex]\dfrac{\mathrm dy}{\mathrm dx}=(3+\sin^5x)^8\cdot\dfrac{\mathrm d\sin x}{\mathrm dx}-(3+\cos^5x)^8\cdot\dfrac{\mathrm d\cos x}{\mathrm dx}[/tex]

[tex]\dfrac{\mathrm dy}{\mathrm dx}=\cos x(3+\sin^5x)^8+\sin x(3+\cos^5x)^8[/tex]
Final answer:

The first part of the Fundamental Theorem of Calculus provides a method to find the derivative of a function. However, clarity is needed in the question as it has extra elements. If we consider the derivative of y = cos x (3 + √5)8 sin x, it would be f'(x) = -sin x (3 + √5)8 sin x + cos x (3 + √5)8 cos x.

Explanation:

Since the question asks for the derivative of the function y = cos x (3 + √5)8 dv sin x, we'll need to use the First Part of the Fundamental Theorem of Calculus. This theorem states that if a function f is continuous over the interval [a, b] and F is an antiderivative of f on [a, b], then the definite integral from a to b of f(x) dx equals F(b) - F(a). In this case, we have y = cos x (3 + √5)8 dv sin x which sadly is not clear due the presence of apparently extra and possibly typographical elements.

Assuming, the question intends to find derivative of y =  cos x (3 + √5)8 sin x, we can proceed as follows:

Let f(x) = cos x (3 + √5)8 sin x. Then by applying the chain rule, we get: f'(x) = -sin x (3 + √5)8 sin x + cos x (3 + √5)8 cos x.

Learn more about Calculus here:

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Lindsay's watering can holds 12 quarts of water. She uses 1 pint of water on each of her flowers.

How many flowers can she water?

Answers

1 quart = 2 pints

12 quarts x 2 = 24 pints

1 flower = 1 pint

 she can water 24 flowers

She can water 24 flowers using 12 quarts.

1 quart consists of how many pints?

1 quart consists of 2 pints

So, 12 quarts = 12*2 =24 pints

It is given that she uses 1 pint of water on each flower.

So, 24 pints can be used to water =24*1 =24 flowers.

Therefore, She can water 24 flowers using 12 quarts.

To get more about quarts and pints visit:

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Which describes a cost that fluctuates depending on the number of units produced A) Liability B) Revenue C) fixed cost D) Variable cost

Answers

Answer: D: Variable cost

Explanation: There are two aspects of cost in the process of production. One is fixed and the other is variable

The variable component is called as variable cost which fluctuates based on the number of units produced. The examples of variable costs include commissions, direct labor costs, manufacturing costs etc which depend on the number of units produced and sold

A cost that fluctuates depending on the number of units produced is called a variable cost.

Option D is the correct answer.

What is a variable cost?

A variable cost is a cost that changes proportionally to the level of activity or production volume.

We have,

The cost per unit varies depending on how many units are produced.

As more units are produced, the variable cost increases, and as fewer units are produced, the variable cost decreases.

This is in contrast to a fixed cost, which remains constant regardless of the level of production.

Examples of variable costs include direct labor, raw materials, and production supplies.

Thus,

A cost that fluctuates depending on the number of units produced is called a variable cost.

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Cost per mile is calculated by dividing total cost by total miles. Using the notation P = cost per mile, C = total cost, and M = total miles, show this relationship in algebraic equation form.

Answers

(cost per mile) = (total cost)/(total miles)

Substituting the variables defined in the problem statement, this is ...
   P = C/M

Answer:

(cost per mile) = (total cost)/(total miles)

Substituting the variables defined in the problem statement, this is ...

  P = C/M

Step-by-step explanation:

Solve for the variable 10/8=n/10

Answers

Answer: 50/4 or 12.5

Step-by-step explanation:

We can cross-multiply in this situation.

Cross-multiplying...

[tex]\frac{10}{8} = \frac{n}{10}[/tex]

8n = 10(10) = 100

In other words, we multiply the denominator of 10/8, which is 8, by the numerator of n/10, which is n, and vice-versa.

Dividing 8 on both sides....

n = 100/8 = 50/4 = 12.5

SCIENCE HELP 10 POINTS!!!!!


The greenhouse effect traps heat near earth's surface. Greenhouse gases in the atmosphere—carbon dioxide, water vapor, methane, and nitrous oxide—allow the shorter waves of ultraviolet radiation from the sun to enter earth's lower atmosphere. However, these gases do not allow the longer wavelengths of infrared radiation to pass back out to the outer atmosphere. The result is that the lower atmosphere heats up.This result happens naturally, but it can be accelerated by human activities. Since the late 1800s, human activity has greatly altered the amount of greenhouse gases that enter the atmosphere. Burning fossil fuels, farming, and clearing forests, as well as industry, have all contributed to increases of carbon dioxide (CO2), methane, nitrous oxide, and other greenhouse gases in the atmosphere.The result is that temperatures in the troposphere have gone up. Many scientists identify this increase in greenhouse gas emissions as contributing directly to global warming. This suggests that human activity has had an impact on the global climate.

The author argues that in modern times, the greenhouse effect *

A.helps keep the Earth warm

B.has increased because of human activity

C.is in a natural cycle of changing

D.has changed local weather patterns

Answers

D it is changing local weather patterns

C.is in a natural cycle of changing


help how woudl i do this ive attached a picture

Answers

Angle b° is an inscribed angle, then its measurement is the half of the arc:
m angle b° = arc/2
m angle b° = 60°/2
 m angle b°=30°
b=30

Answer: Fourth option: 30

Instructions:Select the correct answer from the drop-down menu. In the figure, sin ∠MQP = cos N and sin R sin R and sin N cos N and sin M cos R and sin N .

Answers

The easiest way to get this problem correctly is by calculating the sines and cosines of all the angles in the choices then choosing the correct choice.
sin ∠MQP = sin(56) = 0.829cos ∠N = cos(56) = 0.559sin ∠R = sin(34) = 0.559sin ∠N = sin(56) = 0.829cos ∠N = cos(56) = 0.559sin ∠M = sin(90) = 1cos ∠R = cos(34) = 0.828
Based on these findings, it is obvious that sin ∠MQP is equal to cos ∠R and sin ∠N.Thus, the correct choice is "cos R and sin N".

Answer:

Cos R and sin N

Step-by-step explanation:

What is the similarity ratio of the smaller to the larger prisms? Enter your answer as a:b

Answers

The similarity ratio, I believe, is 2:3.

Because the lengths are 6 and 9 (2:3), the widths are 8 and 12 (2:3), and the heights are 6 and 4 (2:3).

Answer:

6:9>2:3

Step-by-step explanation:

In order to do this, you just have to equalize the ratio you just need to search for the same sides, so the 6 side is similar with the 9 side on the larger, and then the 8 to the 12 and the 4 to the 6, so you just equalize any of those equal we will use the 8 and 12:

8:12

Now we just reduce it with the same:

4:6

2:3

So the ratio would be 2:3.

I do have a time limit. I appreciate any help
If YB = ZA find the value of X and the length of YB

Answers

Since ZA and YB are equal in length and the two lines are parallel to each other.

Also, we can see that YZ and AB are perpendicular to both ZA and YB, thus

YZ = AB

16x - 4 = 4 - 4x

16x + 4x = 4 + 4

20x = 8

x= 8/20 = 2/5

YB = ZA = 20x - 5 = 20(2/5) - 5 = 3

Thus, the value of x is 2/5 and length of YB is 3 units.

So, the correct answer is option A


Choose the equation that represents the line passing through the point (-3,-1) with a slope of 4

Answers

It might look like one of ...
  y +1 = 4(x +3) . . . . . . point-slope form
  y = 4(x +3) -1 . . . . . .. another point-slope form
  y = 4x +11 . . . . . . . . . slope-intercept form
  4x -y +11 = 0 . . . . . . . general form
  4x -y = -11 . . . . . . . . . standard form

What is the degree measure of angle A?_____ degrees

Answers

Hello!

Vertical angles are congruent

Angle A is vertical angles to the angle that measures 80

The answer is 80

Hope this helps!

If it takes 2 nurses 2 minutes to measure the blood pressure of 2 patients, how long would it take 200 nurses to measure the blood pressure of 200 patients (in minutes)?

Answers

Final answer:

One nurse takes 2 minutes to measure the blood pressure of one patient. With 200 nurses, each assigned to one patient, it will take all nurses 2 minutes to measure the blood pressure of 200 patients.

Explanation:

The question is asking for the time it would take a group of nurses to measure the blood pressure of an equal number of patients given a scenario. It works on the principle that if the number of nurses is directly proportional to the number of patients, the time it takes for one nurse to measure one patient's blood pressure will be the same, regardless of how many nurses or patients there are, as long as the ratio remains 1:1.

If it takes 2 nurses 2 minutes to measure the blood pressure of 2 patients, that means one nurse takes 2 minutes to measure the blood pressure of one patient. Therefore, if you have 200 nurses each measuring the blood pressure of one patient, it would still take 2 minutes for all 200 patients to have their blood pressure measured since each nurse is working with one patient individualy.

Compute the simple interest earned on a deposit of $5000 at 8.5% for 120 days

Answers

keeping in mind that 120 days is not even a year, since there are 365 days in a year, exluding leap-years, then 120 days is really 120/365 year.

[tex]\bf ~~~~~~ \textit{Simple Interest Earned} \\\\ I = Prt\qquad \begin{cases} I=\textit{interest earned}\\ P=\textit{original amount deposited}\to& \$5000\\ r=rate\to 8.5\%\to \frac{8.5}{100}\to &0.085\\ t=years\to \frac{120}{365}\to &\frac{24}{73} \end{cases} \\\\\\ I=(5000)(0.085)\left( \frac{24}{73} \right)\implies I \approx 139.72602739726[/tex]

A test is worth 50 points. Multiple-choice questions are worth 1 point, and short-answer questions are worth 3 points. If the test has 20 questions, how many multiple-choice questions are there?
A. t for test, q for questions
B. m for multiple choice, s for short answer
C. s for short answer, t for test
D. p for points, m for multiple choice

apex mcr

Answers

Use the following formula to find the answer to this question: 

S * Q + M * Q = P 

Representations: 

S = The amount of points for short-answer questions. 

M = The amount of points for multiple-choice questions. 

Q = Number of questions for each of the type of questions that add up to the total number of questions on the test (20 questions). 

P = Total points on the test. 

Since there is a total of 50 points on the 20 question test, you would need to divide up the amount of questions there are for each of the type there are on the test, short-answer, and multiple-choice. 

3 * Q + 1 * Q = P 

Now find how many of the type of questions there are out of 20 questions on the test that would add up to the total number of points on the test. 

3 * Q + 1 * Q = 50 

(15 + 5 = 20 questions on the test, 15 and 5 can be used for the number of questions for each type of question on the test). 

3 * 15 + 1 * 5 = 50 

45 + 5 = 50 

50 = 50 

So, your total number of multiple choice questions are: 5. 
And, your total number of short answer questions are: 15. 

I would go with D. for your answer. I may be wrong. 

I hope this helps. 

~ Notorious Sovereign

The average weekly income of teachers in one school district is $750 with a standard deviation of $85. Find the percentage of teachers earing more than $825 a week?

Answers

Point estimate (average) = $750
Standard deviation = $85
P(X>$825) = ?

Z = (X-mean)/Standard deviation = (825-750)/85 ≈ 0.88

From Z-table, P(X=825) = 0.8106

Therefore,
P(X>$825) = 1 - P(X=$825) = 1-0.8106 = 0.1894 = 18.94%

Percentage of teachers earning more than $825 is 18.94%.

QM Q2.) Find the multiplicities of the greatest zero, second greatest zero, and the smallest zero.

Answers

Method
First check out the zeros (first box). 

Step One.
Put brackets around terms 1 and 2 and another set around terms 3 and 4.

f(x) = (x^3 + 8x^2) - (4x + 32) Watch out that you change the sign on the 32. Minus signs can be devastating.   The idea is that when the brackets are removed, the question will be exactly as it was before you put the brackets there.

Step Two
Pull out any common factors.
f(x) = x^2(x + 8) - 4(x + 8)

Step Three.
If there is a common binomial pull it out as well. This is the hardest part of the problem. The binomials have to be exactly alike (in this case they are).

f(x) = (x + 8) (x^2 - 4) 

Step Four
Factor (x^2 - 4). This is an exact difference of squares. It factors into
x^2 - 4 = (x + 2)(x - 2)

Step five
Find the zeros.
f(x) = (x + 8)(x - 2)(x + 2)

x + 8 = 0
x = - 8

x + 2 = 0
x = - 2

x - 2 = 0
x = 2

I know you didn't ask for all of this, but when someone asks a question, it's always a good idea to check the work done. In your case it was all correct. That's a very good thing.

Definition
Multiplicity is the number of times a root appears in the solution of a polynomial. 
For example, g(x) = (x -  5)^2 (x - 4)
The five would have a multiplicity of 2 because the equation is really
g(x) = (x - 5)(x - 5) ( x - 4). There are 2 roots that are the same (both are 5).
4 has a multiplicity of 1 in this example.

Answer
The largest root is 2. It has a multiplicity of 1
The second largest root is -2. It has a multiplicity of 1
The tiniest root is - 8 . It has a multiplicity of 1 

Which figure shows how a shape can be rotated about an axis to form the given object?

Answers

The answer is as shown in the attachment which is the first diagram (on the left) on the second row which is highlighted in the attachment

That is the only figure which when rotated about the axis will form a cylindrical form as required.

The top two will form into a solid sphere and the last would form into a solid cylinder and not the one as required.


Answer:

Option C.

Step-by-step explanation:

In this question we will go by every option.

Option A). When a circle showing in the figure is rotated then a hollow ring will be formed.

Option B). In this option when a circle like structure with two layers is rotated about an axis it will forms a ring with two layers. Inner part of the ring will be empty.

Option C). In this option when a vertical strip is rotated by the axis, it will form the cylinder similar to the object shown in the figure.

Option D). In this option when a strip attached to the axis is rotated, a sold cylinder is formed.

Therefore Option C. is the correct option.

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