8 + 2(10 - r) = 8 + 20 - 2r = 28 - 2r
Answer:
E
Step-by-step explanation:
using the rule of radicals
×
⇔
, hence
=
=
×
×
[
= i]
= 2i
→ E
About 2 minutes and 33 seconds?
[ I apologize if this is wrong ]
Answer:
At least 37.74% of the procedures takes between 97.6 and 125.6 minutes
Step-by-step explanation:
The percentage is the area of the standard normal distribution curve between the values 97.6 and 125.6
The standard normal variate of the given data is found as

Thus for the given values Z is calculated as under

Similarly for the other value we have

Thus the area between the calculated values can be found from standard normal distribution table to be 37.74%
Answer:

Step-by-step explanation:
There are 60 minutes in an hour, thus
56 minutes =
of an hour
To simplify divide 56 and 60 by 4
56 minutes =
← in simplest form