Answer:
six
Step-by-step explanation:
you can either do :
x × Y = 2
then 3 × 2=6
Answer:
1320 times
Step-by-step explanation:
Time = 1 h × (60 min/1 h) = 60 min
Revolutions = 60 min × (22 rev/1 min) = 1320 rev
The blades revolve 1320 times per hour.
Answer:

And we can use the normal table and the complement rule we got:

Step-by-step explanation:
For this case we have the following parameters given:

We select a ample size of n=49. And we want to find this probability:

And for this case is a right tail probability and we can use the z score formula given by:

And replacing we got:

And we can use the normal table and the complement rule we got:

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Please provide the proper image.