Answer:
<h2>BD = DC</h2>
Step-by-step explanation:
A perpendicular bisector is a line segment that goes form a vertex to its opposite side. The important characteristic is that a perpendicular bisector intersects the opposide at the mid point and with a right angle, that's why is called perpendicular and bisector.
So, Andrew can conclude that side BC is divide equally, that is, BD = DC.
Therefore, the right answer is the second choice.
Answer: $14.58
Step-by-step explanation: 8% of $13.50 is $1.08 so $1.08 + $13.50 = $14.58
Answer:
23
Step-by-step explanation:
Answer:
1 time unit
Step-by-step explanation:
There is a 1 in 3 chance that the time until the bulb burns out is zero, and a 2 in 3 chance that the time is the average between 0 and 3 (since it is uniformly distributed). Therefore, the expected value for the time until it burns is:
![E(x) = \frac{1}{3}*0+\frac{2}{3} *\frac{0+3}{2}\\ E(X) = 1](https://tex.z-dn.net/?f=E%28x%29%20%3D%20%5Cfrac%7B1%7D%7B3%7D%2A0%2B%5Cfrac%7B2%7D%7B3%7D%20%2A%5Cfrac%7B0%2B3%7D%7B2%7D%5C%5C%20E%28X%29%20%3D%201)
The expected value of the time until the lightbulb burns out is 1 time unit.