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A store purchased antique pull toys for $4,300 and sold them for $8,772. What percentage is the mark-up?

8,772 / 4,300=2.04 -1=1.04 X 100=104% Percentage markup.

Whoops, I think I answered this incorrectly.

I think you are looking for the price that the store got the spools for ($0.40) over the difference ($0.22).

Our equation is

x/100 = 0.40/0.22

Refer to my first post if you are confused.

Way 1:

0.40/0.22= 1 81/99

What does x have to be for x/100 to equal 1 81/99?

I suggest rounding to the nearest hundredth. 

Way 2:

0.4 * 100 = 40

x * 0.22 = 0.22x

0.22x = 40

What does x have to be for 0.22 * x to equal 40?

Hope at least one of the answers I supplied helped.

P.S. I just realized that you're probably the one posting all of the questions about mark-ups and sales taxes.

Would you mind showing us where you need help with? Maybe show some work?

I'm just a bit concerned that you might be posting all of your homework here in order to finish it up quickly for tomorrow. 

a not equal to 0  and

1)      2^x+y=0

         y= -2^x

2)    2^x-y=0

        y= 2^x

Am I not understanding the problem ?

There are no simultaneous solutions.

A website is selling spools of ribbon for $0.62. The site got the spools of ribbon at a cost of $0.40. What percentage is the mark-up

.62/.40=1.55 - 1=.55 X 100=55% Percentage markup.

The site got the ribbons at $0.40, and sold them for $0.62.

The price went up by $0.22.

We can set up the equation like this:

x/100 = 0.62/0.40

The x/100 represents the percentage of 100, and the 0.62/0.40 represents the two prices, the new cost, or cost that the site is selling the spools for, over the original cost, the cost that the site got them for. The two are equal.

From here, you can solve 2 ways.

1.

You can simply divide 0.62/0.40, and the solution is 1.55. Then figure out what x needs to be for x/100 to equal 1.55.

2.

You can also multiply each numerator by the other denominator.

x * 0.4 = 0.4x

100 * 0.62 = 62

Now we have 0.4x = 62.

What does x have to be for 0.4 * x to equal 62?

Forgive me if I'm answering wrongly, do you mean what is the percentage of the difference of the prices ($0.22) from one of the prices ($0.62 or $0.40)?

62/6 can be solved with the calculator, which can be accessed by clicking on the Home tab at the top of the page.

It can also be solved using long division, which can result in a decimal, or a fraction by finding the remainder divided by the divisor.

However, I will simply be using 62/6 as an improper fraction and simplifying.

Since 6 (the denominator) goes into 62 (the numerator) 10 times (rounded to the lesser whole number), that means the whole number of the mixed number is 10.

6 * the 10 times it goes into 62 = 60.

We subtract 60 from 62 to get 2.

Now, we have 10 and 2/6, which simplifies to 10 1/3.

In conclusion, 62/6 is 10 1/3 as a fraction, or 10.3 continued as a decimal.

Putting any number over another is simple. 5 over -6 is the same thing as 5 divided by -6, therefore 5 over -6= 5/-6.

5/-6 is negative five-sixths, which would be your answer.

-5/6

Call the number od eggs that Mary has, M    and the the number that Jane has = J.

So we have the following system

2(M -1)  = J + 1    →  2M - 2   = J + 1        (2) 

M + 1  = J - 1    →  M  =  J - 2      (1)

Putting (1)  into (2), we have

2(J - 2)  - 2   =  J +  1    simplify

2J - 4  - 2  = J + 1

2J - 6 = J +  1

J = 7

And using (1)

M = J - 2  

M  = 7 - 2 

M = 5

So.......June has 7 eggs   and Mary has 5 eggs

p = -3 and a = -2

I'll try to stay through the night.....

p = -3 and a = -2

Use the formula:  A  =  Pe^rt

where     A = final amount = 20 912     P = initial amount = 2 969

               r = rate (as a decimal)           t  =  time  = 25

Substituting:     20 912  =  2 969e^25r

Dividing both sides by 2 969:     7.043434  =  e^25r

Take the ln of both sides:         ln(7.0434)  =  ln(e^25r)

                                                  ln(7.0434)  =25r

Divide by 25:     r  =  ln(7.0434) / 25     --->     r  =  0.078     --->     r  =  7.8%  (approx)

I can't stay through the night, but I can talk until my question gets answered.

Is there a question here?    Solve for X maybe?

x = (y-3)/2 = y/2 - 1.5

At a job interview, my possible boss asked, "How good are you at Microsoft Powerpoint?"

I replied, "I Excel at it."

"Was that a Microsoft Office pun?" He asked.

All I said was, "Word."

He actually had a pretty good Outlook on the whole thing.

138 + 23/60=138.383

Csc(138.383)= 6.565

I'm trying, though we can only post so much spam without looking like idiots...

Approximately 0.1501597444089457

I can't stop laughing!

My sides are hurting!

The mutt desires me, Headmistress of Web2 academy, sister to  Guinevere,  Queen of the Magical Realm of Camelot to anoint him with expressions of undying love !  

Hahahahaha......

If thee were not such a endearing cur I would banish thee to the ‘naughty corner’ for 20 necrons ! 

If the Queen knew of this she may very well have Sir CPhill string you up from the highest branch of the tallest tree.

However you are risible, rather like your master, Chiurgeon Morgan Tud, and you are are not a man but a dog that knows no better.  So I will send you off with a slap on the nose, a flea in your ear and your tail between your legs.  

Be off with you and do not return until you learn to be respectful !

Ms. Melody

Headmistress of Web2 academy.

Solve for x:
(2^x+y)/(2^x-y) = 0

Simplify and substitute z = 1/(2^x-y):
(2^x+y)/(2^x-y)  =  1+(2 y)/(2^x-y)  =  1+2 y z  =  0:
1+2 y z = 0

Subtract 1 from both sides:
2 y z = -1

Divide both sides by 2 y:
z = -1/(2 y)

Substitute back for z = 1/(2^x-y):
1/(2^x-y) = -1/(2 y)

Substitute u = 2^x-y:
1/u = -1/(2 y)

Take the reciprocal of both sides:
u = -2 y

Substitute back for u = 2^x-y:
2^x-y = -2 y

Add y to both sides:
2^x = -y

Take the logarithm base 2 of both sides:
Answer: | x = (log(-y))/(log(2))+((2 i) pi n)/(log(2))  for  n element Z

How do you calculate the compounded growth rate where:

    base year is 2,969 and current year is 20,912 after 25 years. 

If you say 2,969 is "base year" then 20,912 is the Future Value.

The growth rate over 25 year is: 8.121% annual compound. You have to use this formula to calculate this: FV=PV(1 + R)^N=20,912=2,969(1+R)^25.

20,912=2,969(1+R)^25, divide both sides by 2,969

7.04345=(1+R)^25

(1+R)=7.04345^(1/25)

1+R=1.08121

R=1.08121 - 1

R=.08121 X 100=8.121%

can someone please tell me how can i find the roots in these  9x^4+16x^3-76x^2-8x+32=0 numerically? since i was told it can't be done algebraically.

Can you do any calculus?

Just looking at it I can see it cannot have more than 4 roots.

You could just plug in some points to start with and see if you can find some negative and some positive.

If you do find one neg and on pos than there must be a zero(root) iinbetween.

You could then narrow it down - Ir would be good to use Newton's method of approximation here.

Really it is hard for me to tell you the best methos because I do not know wht you knowledge base is.

Drawing the graph with a graphing program like  Will and Heureka have done is a good idea.

The zeros is where it crosses the x axis. :)

I won't give you the answer, but I can give you the formula:

20,912 = 2969 * (percent growth in decimal form)²⁵ + 2969

how to convert a mark out of 90 to out of 10?

If you divide 90 by 9 you get 10

So

If you divide your mark out of 90 by 9 you will bet you new mark out of 10  :)

That is

Divide by 9

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I think CPhill misinterpreted your question. :/

(2 + -5) / 2  =

( 2 - 5) / 2  =

-3 / 2