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ehidna [41]
3 years ago
9

write the formula to calculate area of quadrilateral when Co ordinates are given​ can you answer it please...

Mathematics
2 answers:
Alexxx [7]3 years ago
3 0

If four coordinates are given then:-

  • Find length of the sides using distance formula

\boxed{\sf \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}}

  • Now break down into two triangles .
  • Use herons formula and find areas of the triangles .add them and get the area
dsp733 years ago
3 0

Answer:

Area of Quadrilateral Using Coordinates

Subtract (2) from (1) and multiply the difference by 1/2 to get area of the quadrilateral ABCD.

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2x-y=-1 in slope intercept form
AnnyKZ [126]

Answer:

y=-2x+1

Step-by-step explanation:

y=Mx+b is the slope formula. You want to move y over to the other side to get the equation equal to y

4 0
3 years ago
Find the equation of the line. Use exact numbers <br><br> Y= __ x+ __
nika2105 [10]

Answer:

y = 3/4x -2

Step-by-step explanation:

slope = rise/run = 3/4

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5 0
3 years ago
Solve the inequality 4(n-3)- 6 &gt; 18
Sonbull [250]

Answer:

n>9

Step-by-step explanation:

4(n-3)- 6 > 18

To solve this inequality we need to remove the parenthesis

distribute 4 inside the parenthesis

4n -12 - 6 > 18

Now combine like terms

4n - 18 > 18

We need to isolate 'n', so we add 18 on both sides

4n > 36

Now divide both sides by 4

n > 9

So the value of n is greater than 9


8 0
3 years ago
Read 2 more answers
How to expand (X+8) (X+3)
Wewaii [24]
(a+b)(c+d)=ac+ad+bc+bd\\\\(x+8)(x+3)=x\cdot x+3\cdot x+8\cdot x+8\cdot3\\\\=x^2+3x+8x+24=x^2+11x+24
6 0
3 years ago
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Determine the equation of the line with slope 3 that passes through the point M(1.2).<br> ?
guapka [62]
Y = 3x - 1

The format for slope intercept form is:

y = mx + b

m represents the slope and that was given so:

y = 3x + b

Now we have to substitute the value from the given point into “y” and “x” to solve for “b”

(2) = 3(1) + b
2 = 3 + b
-1 = b

Now that we know b we can substitute it into y = 3x + b to get the equation of the line

y = 3x - 1

~~hope this helps~~
5 0
2 years ago
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