Answer:
54 MINUTES.
Step-by-step explanation:
3:14 - 2:20 = 54 MINUTES!!
The only ordered pair that shows Y as four less than X is (10, 6).
Answer:
4.5 hour and 2 hour
Step-by-step explanation:
Given: The mean number of hours per day spent watching television, according to a national survey, is 3.5 hours, with a standard deviation of two hours.
To Find: If each time was increased by one hour, what would be the new mean and standard deviation.
Solution:
let the total numbers entries of hours in survey be = 
each entry in survey be = 
mean of survey is =
=

standard deviation is =
=

if each entry in survey is increased by one hour then,
each new entry in survey is = 
the new mean is
= 


+
=
+ 1=

now,
standard deviation is


putting values,

=
=2
new mean and standard deviation are
and

Answer:
15
Step-by-step explanation:
If each necklace takes 30 beads, she can make 15 necklaces until she runs out of beads. 450÷30=15. Hope this helps!