Ezekielcassese
16.07.2019 •
Mathematics
The end of diagonals of a rhombus are (-5,2) and (1,6).if the coordinates of the 3rd vertex are (-6,10).what are the coordinates of the 4th vertex? a. (2,-2) ,0) c. (4,8) d. (-9,8)
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Ответ:
Diagonals of a rhombus bisect each other.
This means th't both the diagonals must have the same mid-point.
Hence, the midpt. of the diagonal through vertices.
by Mid-point formula :-
∴ [ , ] = [ , ]
→ For x :--
=> - 6 + x = - 4
=> x = 6 - 4
=> x = 2
→ For y :--
=> 10 + y = 8
=> y = 8 - 10
=> y = -2
Therefore, Th' fourth vertex is (x, y) = (2, -2)
Hence,
Option [ A. ] : (2, -2) is Correct
~ Hope it helps!
Ответ:
P = 73.1 m
Step-by-step explanation:
The length of a rectangle, l = 20.75 m
The width of a rectangle, b = 15.8 m
We need to find the perimeter of the garden. The formula for the perimeter of a rectangle is given by :
P = 2(l+b)
Substitue all the values,
P = 2(20.75+15.8)
P = 2(36.55)
P = 73.1 m
So, the perimeter of the garden is 73.1 m.