Answer:
38.46%
Step-by-step explanation:
There are no names or marking that can make the calculator look different, so the order is not important. Then we should use a combination to solve this problem.
There are 40 calculators in one shipment, 37 of them good items and 3 of them are defect items. We need to choose 19 good calculators and 1 defect calculator. The number of ways to do that will be:
* = 37!= 53017895700
The number of possible ways to choose 20 calculators out of 40 calculators will be:
= =137846528820
The chance will be: 53017895700/ 137846528820 = 0.3846= 38.46%
The data of brand C suggests that brand C has the fastest clean time because it has the least average time
<h3>How to determine the brand that suggest the fastest?</h3>
To do this, we simply calculate the average time of each brand.
From the complete question, we have:
Brand A: 20, 40, 60
Brand B: 30, 60, 90
Brand C: 15, 30, 45
The average is calculated using:
Average = Sum/Count
So, we have:
Brand A = (20 + 40 + 60)/3 = 40
Brand B = (30 + 60 + 90)/3 = 60
Brand C = (15 +30+ 45)/3 = 30
The least clean time is 30 (brand C).
Hence, the data of brand C suggests that brand C has the fastest clean time
Read more about average at:
brainly.com/question/20118982
#SPJ1
Answer:
31 7/8
Step-by-step explanation:
16 x 2 - 1/8 =
32 - 1/8 = 31 7/8
Hope that helps!
This question makes no sense and you cant solve it