Answer:
4.03 hours
Step-by-step explanation:
Mike hiked to a lake in 4.5 hours at an average rate of 3 2/5
The distance covered can be calculated as follows
= 4.5 × 3 2/5
= 4.5 × 17/5
= 4.5 × 3.4
= 15.3
Pedro hiked the same distance at 3 4/5 miles per hour, Therefore the time in which Pedro reached the lake an be calculated as follows
= 15.3÷ 3 4/5
=15.3 ÷ 19/5
= 15.3 ÷ 3.8
= 4.03 hours
Answer:
sample standard deviation is $50
Step-by-step explanation:
Given a population standard deviation of $500 and a random sample of size, n=100.
-The sample standard deviation is calculated using the formula:

Where:
is the sample standard deviation.
is the sample size.
is the population standard deviation
Therefore:

Hence, the sampling distribution has a mean of $1,500 and a standard deviation of $50
Answer:
6
Step-by-step explanation:
15/5=3
30/5=6
The formula for displacement is:
<span>d=1/2(v0+v)t
If we multiply by 2/t we will have
2*d/t = v0+v
In order to find v0 we subtract </span><span>v (the final velocity)
2*d/t - v = v0
The final result is that: v0 = </span>2*d/t - v
Answer:
78.5
Step-by-step explanation:
Formula to find area of a circle: A= pi*raduis to the second power
3.14*
First you square the 5
You do this by multiplying 5 times itself
3.14*25
Then you multilpy 3.14 and 25
78.5