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Free_Kalibri [48]
3 years ago
6

A line that is perpendicular to the graph of 3x+2y=6 and contains the point (6,-3)

Mathematics
1 answer:
sdas [7]3 years ago
8 0

Answer:

y = (-2/3)x +1

Step-by-step explanation:

The standard equation of a line is: y=mx+b where m-is the slope, and b-is the y intercept. Rewrite the given equation in standard form.

3x+2y = 6

     2y = 3x+6

        y= (3/2)x+3

So the given equation has the slope m =3/2 and y-intercept= 3

A line ⊥ to the given line will have the slope <u>negative reciprocal </u>so the line is

        y= (-2/3 )x +b

To find b will substitute the given point (6,-3) in the new found equation

       -3= (-2/3 )6 +b

       -3= -4 +b

  -3+4 = b

        1 = b

The equation of the line that is perpendicular to the graph of 3x+2y=6 and contains the point (6,-3) is y = (-2/3)x +1

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What is the property of (2x)y=2(xy) ?
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3 years ago
A square of area 36cm is cut out to make two rectangles, which we'll call A and B. The ratio is 2:1 for A: B. Work out the lengt
mr_godi [17]

Answer:

*by length i mean height

Length of A = 6

Width of A = 4

Length of B = 6

Width of B = 2

Step-by-step explanation:

You can approach this question in many different ways, but this is how i did it. I prefer to draw diagrams whenever i can, it just makes it easier, but its your choice what you choose to do.

Since its a square, we know that both the original length and width are 6.

Depending on which way you cut it, either the length or width will stay the same for both rectangles, but you'd still be right. I assumed they were cutting it down the middle, so the length stays 6 for both A and B.

To find the width of A and B:

The width of the square is 6 and i divided that by 3, becauce the ratio is 2:1, which has three "parts" to it (2+1=3).

So now we have 3 parts, each with a width of 2. From the ratio, we know that the width of A has to be double the width of B.

From this i get, width of A = 4 and width of B =2.

If you check this against the ratio 2:1, you'll see its correct because 4:2 simplifies down to 2:1 as well.

* if you want to be extra sure of you answer you can do some trial and error with different values for B and see if it fits the ratio, but theoretically, nothing else should work.

So the final answer is:

Length of A = 6

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Hope that helped :)

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he volume of a gas varies inversely as the pressure upon it. The volume of a gas is 1600 cm3 under a pressure of 4 kg/2. What wi
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<u>Answer</u>

320 cm³


<u>Explanation</u>

Firstly, find the constant of proportionality.

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