1. The local ice cream shop has had a great month in sales. Based on the Information below, calculate the operating ratio.
1 answer:
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You need the distance formula to figure this out. The coordinates for point D are (-5, 1), the coordinates for point E are (-2, 3), and the coordinates for point F are (-3, -2). For the distance or length of DE, the formula looks like this: 
which simplifies a bit down to 
which is 
which of course is 
so DE = 25. Moving on to EF: 
which simplifies to 
which is to say that 
. We do the same for FD: 
which simplifies a bit to 
which is to say that the length of FD is 
. None of the lengths of the sides are the same, so this is a scalene triangle. Last choice given above.
Answer:
B
Step-by-step explanation:
AS is an angle bisector, thus the ratio of the sides of the triangle is equal to the ratio of the corresponding parts of RT, that is
=
, substituting values
=
( cross- multiply )
7.5x = 31.5 ( divide both sides by 7.5 )
x = 4.2
Thus
RT = 3.5 + x = 3.5 + 4.2 = 7.7 → B