Try this solution:
1. for probability of both televisions work:
![P_{2w}=\frac{C^2_8}{C^2_{10}}=\frac{7*8}{9*10}=0.6(2)](https://tex.z-dn.net/?f=%20P_%7B2w%7D%3D%5Cfrac%7BC%5E2_8%7D%7BC%5E2_%7B10%7D%7D%3D%5Cfrac%7B7%2A8%7D%7B9%2A10%7D%3D0.6%282%29%20)
2. for probability of at least on is defective (it means, the sum = one is defective and two are defective):
- for P(1defective);
- for P(2defective);
totaly for at least one is defective:
![P_{at \ least \ 1 \ d}=P_{1d}+P_{2d}=\frac{16}{45} +\frac{1}{45} =0.3(7)](https://tex.z-dn.net/?f=%20P_%7Bat%20%5C%20least%20%5C%201%20%5C%20d%7D%3DP_%7B1d%7D%2BP_%7B2d%7D%3D%5Cfrac%7B16%7D%7B45%7D%20%2B%5Cfrac%7B1%7D%7B45%7D%20%3D0.3%287%29%20)
We will use the equation: a subscript n = initial value + the rate x (n-1). The rate is adding 2 each time and the initial value is 4. The recursive definition for this sequence is a subscript n = 4+2(n-1). This simplified to a sub n=2n+2.
Answer:
72 is your answer mate...
Answer:
(0, 7.5)
Step-by-step explanation:
Compare the equation to the standard-form equation of a circle:
(x -h)^2 +(y -k)^2 = r^2 . . . . . . . center at (h, k); radius r
You will notice that ...
h = 0
k = 7.5
The center is (h, k) = (0, 7.5).
Answer:
Step-by-step explanation:
is an arithmetic progression with ratio=4
a1=5
a2=a1+4=5+4=9
a3=a2+4=9+4=13
...............
a n+1 = a n+4