Given :
P( X = 70 ) = 0.62 .
P( X = 80 ) = 0.23 .
To Find :
We need to find If a person reaches their 70th birthday, what is the probability that they will live to age 80 .
Solution :
We need to find :
We know ,
So ,
Hence , this is the required solution .
Step-by-step explanation:
i hate my llllliiiiiiiiiiiiiffffffffffffeeeeeeeeeeeeee
Answer:
Trapeziod, or Quadaraterial (cheeky)
Trapezoid formula: height times sum of top and bottom times 1/2
17-9=8(height)
25-5-3=17(bottom)
8 times (11+17) times 1/2=112(area)
It’s a) because the triangle has 2 equal sides and one not
x (x + 4) = 5
x² + 4x = 5
x²+ x + (-5) = 0
(x+3)²+(t+3)²=9
x² + 6x + 9 + t² + 6t + 9 = 9
x² + t² + 6x + 6t + 18 + (-9) = 0
x² + t² + 6x + 6t + 9 = 0
x² + t² + 6(x + t) + 9 = 0
3/x + 4/2x = x - 1
6/2x + 4/2x = x - 1
10/2x = x - 1
10 = (x - 1) 2x
10 = 2x² - 2x
0 = 2x² + (-2x) + (-10)
