Melody

921 Questions
34315 Answers

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Mathigon website

I just discovered a site called mathigon

https://mathigon.org/dashboard
lee mas ..

Melody 2 abr 2022

-10

593

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Reporting problems.

There are a number of people having problems at the moment.
If you lodge an error can you please give all relevant information that you can think of.
Where you are in the world - the city or the country - is often very important information. lee mas ..

Melody 16 mar 2022

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How to make an empty rectangle in Latex

I just worked out how to make an empty box of various horizonal size easily in LaTex.
This is not a recommended method, but other methods that I have tried here have not worked.
This coding is really simple. Just put letters inside lee mas ..

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Melody 15 mar 2022

-5

856

3

+118687

HAPPY ANNIVERSARY CHRIS! (CPhill)

I just realized that you became a member here exactly 8 years ago today!

It has been great to have you here all that time

Fuera tema

Melody 13 mar 2022

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WELCOME BACK CPHILL !

Melody 11 feb 2022

-6

706

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Very interesting question. No high level maths required.

This question was posted a couple of days ago.
https://web2.0calc.com/questions/geometry_73561

I think it is really interesting. It looks much more difficult than it really needs to be. lee mas ..

Melody 1 feb 2022

-8

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Members have a better experience. Their questions get more attention.

Almost everyone is posting as a guest.
If you post as a member your questions will have a far greater chance of a timely and helpful response.
If you are a genuine learner and interact with us, you will become known and answerers will do lee mas ..

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Melody 9 ene 2022

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980

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HAPPY BIRTHDAY CHRIS!

Melody 20 dic 2021

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Some guidelines for question askers.

Please note:
1) Ask only one question per post.
2) When asking a question talk about what you have tried for yourself. Then people will take you more seriously and will be more able and willing to help.
3) If you get an answer lee mas ..

Fuera tema

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Melody 4 nov 2021

-10

1075

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Remeniscing - a little historical humour.

I just found this old post that some of you, who have been around for a while, might find amusing.

https://web2.0calc.com/questions/look-at-the-new-leader-board

Fuera tema

Melody 29 oct 2021

+118687

0

50-20=30
30 divided (1/6) = 180 scoops

Melody18 oct 2013

+118687

0

3 candies are 10cents how much is it when you buy 1 and a 1/2 candies.
1 and a half is 3/2 which is easier to write on this computer

one candie costs 10 / 3 cents

so 1 and a half candies cost

(10/3) * (3/2)

5c

Who would buy a half a candie anyway?

Melody18 oct 2013

+118687

0

If you put brackets in like that you will get the wrong answer.
if you enter them both as fractions you will get the correct answer

3 fraction button 1 fraction button 4 - 1 fraction button 1 fraction button 3 =

Melody18 oct 2013

+118687

0

MEGUSTAMILK's answer is good if you just want an estimate.
This is how you simplify
root5 * root60
=root 300 (just as megustamilk said)
Next you have to look for a square number that goes into 300, if there isn't one then you would not be able to simplify any more.
But 100 goes into 300 and it is a square number

root 300 = root(100*3) = root100 * root3 = 10root3

Melody18 oct 2013

+118687

0

Question should read

Question text
Match the description on the left with the salary per pay on the right.
1.Salary: $32,400 How much is this Weekly
2.Salary: $17,400 How much is this Monthly
3.Salary: $21,840 How much is this Biweekly
4.Salary: $24,000 How much is this Biweekly
5.Salary: $28,320 How much is this Semimonthly

These are all 'divide' questions.
Can you do them now Rosey?

Melody18 oct 2013

+118687

0

Hi Rosey,
I think your real problem is with English because these questions are not that hard, especially not the first 2 questions.

1. Louis is currently earning an annual salary of $15,090 at Budget Electronics. He has been offered a job at Delta Tech at an annual salary of $16,660. How much more will Louis earn per week at Delta Tech than Budget Electronics?

Let me give you a less scary looking problem.
Louis earns $15000 every year.
He is offered a new job which will pay $16000
How much more will he get in year if he takes the new job?

I hope that you can see he will get 16000-15000 = $1000 more (it is a subtract problem)
There are 52 weeks in a year. how much extra (more) will he get each week if he gets the extra $1000 in the year?
Well that will be $1000 divided by 52

Your question is similar so i will now let you try it.

2. Sue earns a weekly salary of $350 at Howard's Department Store. Next month she will be promoted from assistant buyer to buyer. In her new position, she will be paid $895 semimonthly. How much more per year with Sue earn?
This time you will need to change each of the amounts into a yearly amount and then you can subtract.

3. Assume your present job pays a monthly gross salary of $1560. You are offered a new position that pays $8.60 per hour with time and a half for all hours over 40 per week. How many hours of overtime per week would you need to work to earn the same amount per week as your present job?
This one is harder
First work out how much will be paid at the second job if just 40 hours every week is worked. $8.60 * 40 * number of weeks in a year
Next work out how much more money needs to be earned. It will be a subtraction
Next work out how much money will be earned for 1 overtime hour at time and a half $8.60 * 1.5 = $12.90
next let x be the number of overtime hours needed.
$12.90 * x = total overtime money needed.
now solve the equation.

I hope this still reads the same when you translate it into spanish.

You said you had a better translator now. What is it? Is it a free one? I use google translator but I know it often does a poor job.

If you still need more help I will keep trying to help you.

Melody18 oct 2013

+118687

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5(5/8 -7) = 5 * (5/8 -7)
then, do it on your calculator ,

Melody18 oct 2013

+118687

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translation

"I just realized that what I said before was absolutely no sense, and I'm sorry! Hahaha, but yeah, if I have more questions be sure to ask me, it's hard to write in English, but it helps you get into college and stuff (: So thanks again I'll post often! With questions, because I'm to take personal finance and for me is hard."
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If you are interested in studying overseas (in English) when you finish school you may like to consider Sydney, Australia. My students seemed to be happy there and I thought it was a good learning environment. Of course your English needs to be reasonable first.

Si usted está interesado en estudiar en el extranjero (en Inglés) al terminar la escuela es posible que desee considerar Sydney, Australia. Mis alumnos parecían ser felices allí y me pareció que era un buen ambiente de aprendizaje. Por supuesto, el Inglés tiene que ser razonable primero.

Melody18 oct 2013

+118687

0

You are correct to say that the 2 solutions are almost equivalent.

However, when I said that you omited half the answer I was referring to the fact that you found only 7/[2sqrt(3)] and failed to identify -7/[2sqrt(3)] as a solution.

I also think that you misused the word symmetrical, I think you meant that cosine is an even function. Which is certainly true. You have answered correctly for theta = +- (pi/6) +2pi* k (where k is an integer)

but you have ignored the answers when theta = (pi +- pi/6 ) + 2pi* k (where k is an integer)

For example If theta = 5pi/6

7sin ²theta + 3cos ²theta = 4 (first statement true)

sec theta + cos theta = -2/root3 - root3/2 = -7/(2root3)

So I repeat

sec theta+cos theta = +-( 2/root3 + root3/2) = +- [7/(2root3) ]

Melody18 oct 2013

+118687

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Melody17 oct 2013