Answer:

Step-by-step explanation:
If a equation has two zeros x=a and x=b then equation can be written as

similarly if a equation has two zeros at x = −6 and x = 2
then equation can be written as



Therefore
is required equation
∑[1/(3^(n-1))] represents the series 1+1/3+1/9+1/27+1/81+1/243 using sigma
notation. I am hoping that this answer has satisfied your query and
it will be able to help you in your endeavor, and if you would like, feel free
to ask another question.
Answer: Option 'd' is correct.
Step-by-step explanation:
Since we have given that
Margin of error = 0.5 years
Standard deviation = 5
At 90% confidence, z = 1.645
We need to find the minimum size of the sample they must take.
So,

Hence, Option 'd' is correct.
Answer: B
Step-by-step explanation: When the number of observations is odd the formula is:
$ x_m = x_\frac{n+1}{2}$
When the number of observations is even the formula is:
$ x_m = \frac{x_\frac{n}{2}+x_\frac{n+2}{2}}{2}$
Answer:
1 hours 30 minutes
Step-by-step explanation:
Subtract 5 hours 20 minutes and 3 hours 50 minutes
which gives 1 hours 30 minutes