Which operation will not change the value of any non zero number?
1 answer:
You might be interested in
Answer:
Step-by-step explanation:
Let p be the number of trees Wangari plants, and h be the time she spends planting them in hours.
We have been given that Wangari plants trees at a constant rate of 12 trees every 3 hours.
Let us find number of trees planted in 1 hour by dividing 12 by 3.
We can represent this information as:
Therefore, the equation relates the number of trees (p) Wangari plants, and the time (h) she spends planting them in hours.
Answer: 52
Step-by-step explanation:
Formula for sample size:-
, where = population standard deviation.
= Two -tailed z-value for
(significance level)
E= margin of error.
Given : tex]\sigma=\text{ 0.30 ounce}[/tex]
⇒Significance level for 99.6% confidence level :
By using z-value table ,Two -tailed z-value for :
E= 0.12 ounces.
Minimum sample size will be :-
Hence, the minimum sample size for the number of packages the inspector must select = 52