The company installs 5000 light bulbs with an average of 500 hours for each bulb. The standard deviation of 100 hours and distribution approximated by a normal curve. The percentage of bulbs that can be expected to last the period of time of less than 690 hours is 97.1%. This will make the answer to be C.
Answer:
see below
Step-by-step explanation:
We can just add up all of these fractions:
2 1/8 + 7/8 = 2 8/8 = 3
8 5/8 + 4/8 = 8 9/8 = 9 1/8
3 + 9 1/8 = 
Answer:
$140
Step-by-step explanation:
10 is 1/3 of x.
10=1/3x
x=30
x is 1/5 of y
30=1/5y
150=y
y-10=z
150-10=z
z=140
Answer:
Step-by-step explanation:
Perhaps you want to use the points (t, P) = (4, 150) and (6, 160) to find the parameters P0 and k in the equation ...

We know from the given points that we can write the equation as ...

Comparing this to the desired form, we see that ...

So, the approximate equation for P is ...

And the parameters of interest are ...
<span>A line can be described as a one dimensional set of points
that has no beginning or end.</span>