2.
5x+6=3x+4
2x=-2
x= -1
3.
7n-29=4n+7
3n=36
n=12
for volume of prism you do area of cross section * height
area = 36
height = 15
=36*15
=540cm ^3
Answer:
in my class just say the (x) mean number 1
Answer:
0.006 is the probability that the record will be broken in next year.
Step-by-step explanation:
We are given the following information in the question:
Mean, μ = 62 seconds
Standard Deviation, σ = 0.8 seconds
We are given that the distribution of face time is a bell shaped distribution that is a normal distribution.
Formula:
The record will be broken if the time is less than 60 seconds.
P(time is less than 60 seconds)
P(x < 60)
Calculation the value from standard normal z table, we have,

Thus, 0.006 is the probability that the record will be broken in next year.