Answer:
Rational.
Step-by-step explanation:
1.666... can be expressed as
.
Hence it is rational.
Answer:
Option C) 0.25
Step-by-step explanation:
We are given the following information in the question:
Mean, μ = 22 minutes
Standard Deviation, σ = 11.9 minutes
We are given that the distribution of response time is a bell shaped distribution that is a normal distribution.
Formula:
P(response times is over 30 minutes)
P(x > 30)
Calculation the value from standard normal z table, we have,

Thus, the correct answer is
Option C) 0.25
Answer:
278.773622 or 300 if rounded
Step-by-step explanation:
The area of a circle is:
π (Pi) times the Radius squared:
A = π r2
or, when you know the Diameter:
A = (π/4) × D2
or, when you know the Circumference:
A = C2 / 4π
Answer:
3 1/3 km or 3.33 km (to the hundredth)
Step-by-step explanation:
Using the given formula,
estimated distance = v.t = velocity * time,
velocity = 5 km/h
time = 40 minutes =
hours =
hours
Therefore
distance = 5 km/h *
hours = 10/3 km
= 3.33 km approximately