Answer:
(- 5, 2 )
Step-by-step explanation:
Given endpoints (x₁, y₁ ) and (x₂, y₂ ) then the midpoint is
( , )
Here (x₁, y₁ ) = (- 6, 1) and (x₂, y₂ ) = (- 4, 3) thus
midpoint = , ) = ( , ) = (- 5, 2 )
The coordinates of point c: (7,5)
The coordinates of point D:(8,1)
(x-5) (x+4)
x^2-x-20
What two terms multiply to -20 and add to -1
-5*4 = -20
-5+4 = -1
$9
If you do 13x1.50= 19.5
28.50 - 19.5 = 9
<em>343 metres per second </em>
<em>In dry air at 20 °C (68 °F), the speed of sound is 343 metres per second (about 767 mph, 1234 km/h or 1,125 ft/s).</em>
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