Answer:
x^2+6x+3=0
(X+3)^2-9+3=0
since (x+3)^2>=0 for any real value of x
at vertex
(X+3)^2=0
X=-3
i.e y=0-9+3=-6
vertex (-3,-6)
at y intercept x=0
y=3
x^2 coefficient is positive
therefore this is a concave up graph
Answer:
Chi-square distribution
Step-by-step explanation:
We want to investigate that whether best ski area is independent of skier level or not so this situation leads to test of independence. For investigating independence of two variable we usually use chi-square distribution.
Thus, for conducting the test for investigating the independence between best ski area and skier level we use chi-square distribution.
All 3 triangle angles sum to 180 degrees.
So third angle = 180 -40 -60
third angle = 80 degrees
Answer:
7910=7910
Step-by-step explanation:
Answer:
It is about 4.0*10^2
Step-by-step explanation:
