Answer:

Step-by-step explanation:

One solution
Hope it helped you
Answer:
The boys need to complete the run in 385.9 seconds or less in order to earn a certificate of recognition from the fitness association.
Step-by-step explanation:
We are given the following information in the question:
Mean, μ = 450
Standard Deviation, σ = 50
We are given that the distribution of time for fitness test is a bell shaped distribution that is a normal distribution.
Formula:

We have to find the value of x such that the probability is 0.10
P(X<x) = 0.10

Calculation the value from standard normal z table, we have,


Hence, boys need to complete the run in 385.9 seconds or less in order to earn a certificate of recognition from the fitness association.
That would be D. When you factor out the "x" you get x(13-29)
Answer:
The number is 10.
Step-by-step explanation:
Given that if we product 3 with a number and then subtract eight from it then we will get twenty-two.
So, if the number is x, then by the condition given we can write
3x - 8 = 22
This is a linear equation of single variable x, so it will have a single solution.
Now, 3x - 8 = 22
⇒ 3x = 30
⇒ x = 10 (Answer)