Answer:
= 9
Step-by-step explanation:
The given parameters are;
The point of intersection of the perpendicular bisectors of the sides 
, 
, and 
intersect (meet) at point G
Let D represent the point of intersection of the perpendicular bisector from G to , we have for ΔBGD and ΔCGD;
≅ by reflexive property
∠GDB = ∠GDC = 90° given that is the perpendicular bisector of
Similarly, 
≅ 
, also given that is the perpendicular bisector of
Therefore;
ΔBGD ≅ ΔCGD by Side-Angle-Side (SAS) rule of congruency
≅ 
by Congruent Parts of Congruent Triangles are Congruent, (CPCTC)
= = 9 by definition of congruency
∴ = 9.
Answer:
(a) Disjoint
(b) Independent
(c) No
Explanation:
(a) Disjoint events are those events that are mutually exclusive or we can say that the two events can not occur at the same instant.
Thus in a single draw we can not get both yellow and green ball.
(b) Those events in which the probability of the occurrence of one event does not affect the probability of the happening of another event in any way.
Thus the two pieces drawn are from the infinite supply does not affect one another and hence are independent.
(c) No, since after one event has occurred the occurrence of the other one is not possible.
Answer:
its i :D
Step-by-step explanation:
thats should be it
Answer:
k > 100
Step-by-step explanation:
y= x²+20x+k
if the graph doesn't intersect the x-axis it means it has no real roots so the discriminat has to be negative so will have imaginary roots
discriminant is
b²-4ac = 20²-4*1*k = 400-4k for this to be negative k has to be more then 100 so will have 400 - a number bigger then 400
k > 100 is the solution
