Answer:
first one
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Given:
Quadrilateral PQRS
P(o, o), Q(a+c, o), R(2a+c, b), S(a, b)
Find:
whether the diagonals are perpendicular using coordinate geometry
Solution:
If the diagonals are perpendicular, their slopes multiply to give -1.
The slope of PR is
(b-o)/(2a+c-o)
The slope of QS is
(b-o)/(a-(a+c)) = (b-o)/(-c)
The product of these slopes is
(b-o)·(b-o)/((2a+c-o)(-c))
This value will not be -1 except for very specific values of a, b, c, and o.
It cannot be concluded that the diagonals of PQRS are perpendicular based on the given coordinates.
Answer:
$76.50
Step-by-step explanation:
17.00 + 88.40 = 105.40
105.40 + 47.60 = 153.00
70% - 20% = 50%
$153.00 divided by 50% = $76.50
Answer:
0.725 is between 0.72 and 0.73
5/6•0•875/1000
56(0)(875)/1000
=56(0)(875)/1000
=(0)(875)/1000
=0/1000
=0