Length of PS= 3.99 units
Length of QS=2.08 units
Area of triangle PQR=14.12units²
Answer:
f
Step-by-step explanation:
First angle 90 degrees
Second angle 30 degrees
Third angle 60 degrees
Answer:

Explanation:
There are only two mutually exclusive possibilities for each complex electronic system: being <em>defective</em> or being <em>not defective</em>:
- Number of complex electronic systems: 7
- Nmber of defective systems: 2
- Number of not defective systems: 5
<em>Probability </em>that no defective systems are found in the sample is the equal to the probability of selecting them consecutively without replacement and finding each one is not defective:
- Porbability the first is not defective × probability the second is not defective
- 5/7 × 4/6 = 20/42 = 10/21
That's easy 172.1 times 10 with the exponent of 7
.