Answer:
The standardized score (z-score), relative to all U.S. births, for a baby with a birth length of 45 centimeters is<u> 2.88cm . </u><u> </u>
Step-by-step explanation:
It is given that the mean length of the babies born after the 40 weeks gestation period 
is 52.2cm
Standard deviation = 2.5
Baby born on one month earlier having mean length 
= 47.4cm
Now , we will use the formula for z-score ,
= -2.88
<u>Therefore , A birth length of 45 centimeters is 2.88 below the mean standard deviation.</u>
Answer:
9,000
Step-by-step explanation:
formula= I=prt
turn 3% into a decimal
x=(50k)0.03(6)
x=9000
correct me if im wrong but this should be correct
Answer:
19.20 seconds.
Step-by-step explanation:
Given:
She invited 150 friends.
But she only had 5 activities for her friends and her party only lasted 4 hours.
Question asked:
How much time will each friend get on each activity ?
Solution:
First of all convert 4 hours into seconds:-
1 hour = 3600 seconds
4 hours = 3600 
4 = 14400 seconds
<u>By unitary method:</u>
150 friends get time in 5 activities = 14400
1 friend get time in 5 activities = 14400 
150 = 96 seconds
That means <u>each friend get 96 seconds in all 5 activities.</u>
Each friend get time on each activity = ?
Each friend get time on 5 activities = 96
Each friend get time on 1 activity = 96 5 = 19.20 seconds
Thus, each friend will get 19.20 seconds on each activity.
K-10/2=-7
k-10/2+10/2=-7+10/2(reduced to 5/1 or just 5)
k=-7+5
k=-2
