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3 years ago

Someone help me with finding an x and y equation and then finding points and graphing them

Mathematics

1 answer:

snow_lady [41]3 years ago

7 0

Answer: main (79,1580) when start graphing start with (1,20)

Step-by-step explanation:

(x,y)

x is number of students which is 79 and

y is the cost which is 1580

so the answer is (79,1580)

79 students cost 1580

1 student cost 1580/79=20 $

so start with

(1,20)

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Answer:

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Step-by-step explanation:

you can use a calculator and put 0.2*0.5

But also in your head you can do whats 20% of 5, so what times 5 equals 5? 1

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4 years ago

With the ratio at 1:1, Point C appears to be the midpoint. Use the midpoint formula to ascertain (make sure of) whether Point C

Mila [183]

Answer:

See Explanation

Step-by-step explanation:

The question is incomplete because the coordinates of A, B and C were not given in the question.

However, the following explanation will guide you...

The midpoints, C of two point A and B is calculated as:

$C(x,y) = (\frac{x_1 + y_1}{2}, \frac{y_1 + y_2}{2})$

Where $(x_1, y_1)$ are the coordinates of A

and

$(x_2,y_2)$ are the coordinates of B

Take for instance, the given coordinates are

A(4,6); B(2,4) and C(3,5)

Then;

Plug in these values in the given formula:

$C(x,y) = (\frac{x_1 + y_1}{2}, \frac{y_1 + y_2}{2})$

$(3,5) = (\frac{4 + 2}{2}, \frac{6 + 4}{2})$

$(3,5) = (\frac{6}{2}, \frac{10}{2})$

$(3,5) = (3,5)$

In that case,

C is really the midpoint

To the b part: <em>Explaining why ratio 1:1 is used</em>

The reason is that both parts of the ratio are in equal proportion (1 and 1);

Because of this equal proportion, ration 1:1 is right to calculate the midpoint

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3 years ago