Using the graph, determine the coordinates of the roots of the parabola.
1 answer:
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Answer:
d) The points on the perpendicular bisector of a side of a triangle are equidistant from the vertices of the side it bisects.
Step-by-step explanation:
By the property of perpendicular bisector, any point on the perpendicular bisector is equidistant from the end points of the segment it bisects.
For the given triangle any point on the line is equidistant from the vertices
and
as line
is the perpendicular bisector of side
.
Thus, the statement below holds true:
d) The points on the perpendicular bisector of a side of a triangle are equidistant from the vertices of the side it bisects.
Answer:
The probability that no one sits in the same seat on both days of that week is given by,
Step-by-step explanation:
Given : A certain class has 20 students, and meets on Mondays and Wednesdays in a classroom with exactly 20 seats. In a certain week, everyone in the class attend both days. On both days, the students choose their seats completely randomly (with one student per seat).
To find : The probability that no one sits in the same seat on both days of that week ?
Solution :
Let be the i-th student sits on seat which he has been sitting on Monday.
According to question,
We have to calculate
Applying inclusion exclusion formula,
Using symmetry,
Therefore, The probability that no one sits in the same seat on both days of that week is given by,