Answer:
A
Step-by-step explanation:
Firstly we find the x value. x-7=0; x=7
Secondly we introduce x value in 1st ecuation. So
(7-3)^2 +(y+1)^2=16, 16+y^2+2y+1=16,
Consider this ecuation: y^2+2y+1=0
y1=( -b+Δ)/ 2a, y2= (-b-√Δ)/2a, Δ=√b^2-4ac=√4-4=0
y1,2= -2/2= -1
1 Real solution x=7 and y= -1.
100 percent sure it's the first one
Answer:
Isocoles (I can't spell)
Step-by-step explanation:
180-70=110. 110-40=70.
Two angles are 70
The correct Answer is C and D.
Complete data:
f(x,y) x Y
0.2 50 80
0.3 30 50
0.5 40 60
Answer:
Expected values for x and Y
E(x) = 39, E(Y) = 61
Variance for x and Y
E(x^2) = 1570
E(Y^2) =3830
Step-by-step explanation:
The detailed explanations are contained in the file attached