Answer:
x = 1/20s so s=0
Step-by-step explanation:
1. 80xs/80s = 4/80s
2. you will get: 1/20s so technically 2=0
Answer:
B
Step-by-step explanation:
Inside the figure is a right triangle with hypotenuse 18 cm. Its height is half the measure of the side length. 18.2 is 9 cm. Using 9 cm and 18 cm, substitute the values into the Pythagorean theorem.

Answer: A. 
Step-by-step explanation:
To find the slope we must find the change in y over the change in x. Δ
Or rise over run.
In the graph, we have two "good" points. (0, -6) and (4,0)
So for Δy 0 to -6 = -6
So -6 goes on top 
Now Δx goes from 4 to 0 so the change would be -4.
So now it becomes 
Since there are two negatives it becomes a positive.
Or simply put, 
Answer:
c.is the average value for the random variable over many repeats of the experiment.
Step-by-step explanation:
Expected value of a discrete random variable:
To find the expected value of a discrete random variable, we multiply each outcome of the variable by it's probability, which over many repeats of the experiment, will give the average value, and thus, the correct answer is given by option c.
Even though a discrete random variable takes only discrete values, the mean can be a continuous(decimal) value.