ratios

I

Irma Garcia

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hello i am having trouble with ratios when it comes to word problems can anybody help me
EX. sales tax in pennsylvannia is 6% create an equation for the total price (cost plus tax) of the purchAse in PA in the term of its cost. how much would a person pay for a car whose cost is 32,000?
 


I deleted my post because I misinterpreted the exercise's instruction to "create an equation … in the term of its cost".

$32,000 is the pre-tax amount, not the grand total.

I apologize for any confusion that I caused you.

 
Irma Garcia said:
hello i am having trouble with ratios when it comes to word problems can anybody help me
EX. sales tax in pennsylvannia is 6% create an equation for the total price (cost plus tax) of the purchAse in PA in the term of its cost. how much would a person pay for a car whose cost is 32,000?
Click to expand...
To start, that ain't got nuttin' to do with "ratios"!

Here's an example: 5% tax on $300 = .05 * 300 = $15 ; so total price is 300+15 = 315.
If you're still stuck, talk to your teacher.
 


It looks like Denis' example is what they want, although I would not describe that equation as being "in terms of 300".

(I suppose that we could describe 315 as written in terms of both 300 and 15, but saying that is silly because it's obvious. :roll: )

So, you need to simply calculate 6% of 32000, add that amount to 32000, and show the total (all written as an equation like Denis' example).

 
im kinda on my own im taking the online course so the teachers arent really helping me thats why im soo stuck. the book it shows u but nothing like the word problems
 


I'm not sure what your book is talking about because I can't see it.

We can write 6% as a ratio: 6/100

It seems like the exercise wants you to write: [cost of the car plus the tax equals the total].

32000 + 0.06(32000) = total (which I'll leave for you to calculate)

If we write 0.06 as a Rational number instead, it would look like this:

32000 + (6/100)(32000) = total

Actually, we could write each of the numbers as a Rational, too.

(32000/1) + (6/100)(32000/1) = total

I'm sorry that I do not understand the "ratio" part of this exercise. Can you tell me the chapter title in the book from where this exercise is located ?

Maybe that information will give me a clue.

 
look this is what is saying graph the following equation calculate the slope, x intercept and y intercept and label the intercept on the graph. idk if that is what i have to do. in the book it says ratios and proportions thats why i figure that those problems were going to be ratios and proportions
 
Irma Garcia said:
look this is what [the book] is saying

I can't look because I cannot see your book !
Click to expand...

To clarify, are you telling me that the book gives BOTH of the following statements (in red) for the single exercise that you posted?

sales tax in pennsylvannia is 6% create an equation for the total price (cost plus tax) of the purchAse in PA in the term of its cost. how much would a person pay for a car whose cost is 32,000?

AND

graph the following equation calculate the slope, x intercept and y intercept and label the intercept on the graph.

What is "the following equation". I mean, can you see it?

Do you have any way to contact your on-line instructor ?

It's easy to graph lines, but you need an equation with x and y first.

The equation 32000 + 0.06(32000) = total does not contain x or y. It cannot be graphed.

The equation 32000 + 0.06(32000) = total is NOT a proportion.

A proportion is an equation that shows two ratios equal to one another.

 
the question is the firsst one u put thats what im lookin but the instructions is what i dont get. i will just skip that one.
you think you can help me with this next question?
the points (1,5), (4,5) and (1,0) represents three corners of a regtangle find the coordinate of the fourth point.
 
Irma Garcia said:
i will just skip that one.

I would turn in the following, instead of skipping it altogether.

32000 + 0.06(32000) = the amount a person would pay for a $32,000 car in PA (including 6% sales tax)

32000 + 1920 = 33920

A person would pay $33,920.



you think you can help me with this next question?
the points (1,5), (4,5) and (1,0) represents three corners of a regtangle find the coordinate of the fourth point.

Do you know how to plot these three points on the xy-coordinate system ?

Do you know that opposite sides of any rectangle are equal in length ?
Click to expand...

PS: In the future, please start a new thread for each new exercise. 8-)

 
wait dont we do the table? but we dont have an equation to start with so i cant do the table to find the last point
 
Irma Garcia said:
no i dont. that all they gaved me .

Good grief!

What is the name of this lousy school offering such a deficient beginning algebra course on-line?

It seems (to me) like they just want your money.
Click to expand...

Here's a quick sketch of the three points.

You need to find the coordinates for the point labeled (x, y).

(Double-click image, if necessary, to expand.)

[attachment=0:3itcvax1]Rectangle.jpg[/attachment:3itcvax1]

 

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Irma Garcia said:
so the $th point would ne (0,4)?

No.

xy-coordinates are always written as an ORDERED pair of number. This means that the order in which the two numbers are written is very important.

(x, y)

The x-coordinate is always written FIRST.

The point (0, 4) is located on the y-axis because the first number means x = 0.
Click to expand...

Click HERE to study some pages at Purplemath on plotting points.

What is the name of your school ?

 


We could use the Distance Formula. That would be an equation.

Do you think that is what you are supposed to do ?

It seems to me that plotting the points makes the answer obvious; no further calculations are necessary.

(0, 4) is not correct. Can you try again ?

What is the name of your school ?

 
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