Answer:
Option 4, BC = 12.689, m∠A = 58°, and m∠C = 32°
Hope this helps!
Answer:
Step-by-step explanation:
Given that a particular detection system has a 0.83 probability of detecting a missile attack.
Also each system is independent of the other to detect missile attack.
a) the probability that a single detection system will detect an attack=![0.83](https://tex.z-dn.net/?f=0.83)
b) the probability that at least one of the systems will detect the attack given two systems= 1-Prob no system detects
=![1-(1-0.83)(1-0.83)\\\\=1-0.0289\\=0.9711](https://tex.z-dn.net/?f=1-%281-0.83%29%281-0.83%29%5C%5C%5C%5C%3D1-0.0289%5C%5C%3D0.9711)
c) If three systems are installed, the probability that at least one of the systems will detect the attack
= 1- none of the three systems detect attack
![= (1-0.17^3)\\=1-0.004913\\=0.995087](https://tex.z-dn.net/?f=%3D%20%281-0.17%5E3%29%5C%5C%3D1-0.004913%5C%5C%3D0.995087)
d) We find that probability of detecting is more if we increase the system form 1 to 2 and 2 to 3.
Hence for safety and defence purpose multiple detection system is recommended.
Answer:
Sydney is 44 years old
Step-by-step explanation:
<u>Step 1: Make a system of equations
</u>
d = s - 15
<em>d + s = 73
</em>
<u>Step 2: Plug in s - 15 for d in the second equation and solve
</u>
s - 15 + s = 73
2s - 15 = 73 + 15
2s / 2= 88 / 2
<em>s = 44
</em>
Answer: Sydney is 44 years old
The answer is (a)..........
I think the answer is zero