Answer:
3
Step-by-step explanation:
Choose a variable to represent the number to be added to 5 and 3.
"Cross-multiply."
Check: The ratio of 5+3 to 3 + 3 is 8:6, equal to the ratio 4:3.
What is the slope of the line?
1 answer:
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Answer:
About 3 years Speedy Jet printers be guaranteed.
Step-by-step explanation:
Given : Quality control studies for Speedy Jet Computer Printers show the lifetime of the printer follows a normal distribution with
mean and standard deviation
If the company wishes to replace no more than 10% of the printers.
To find : How long should Speedy Jet printers be guaranteed ?
Solution :
Using Z- table,
Z value corresponding to 10% or 0.10 = -1.28.
Applying z-score formula,
The value of x is given by,
Substitute the values,
So, approx 3 years.
Therefore, About 3 years Speedy Jet printers be guaranteed.