Answer:
a
Step-by-step explanation:
since 90 degrees is 1/4 of a circle, the area of the sector is 5²pi/4 = 25/4pi = 19.63
Answer:
no name and function
Step-by-step explanation:
Answer:
248 acres
Step-by-step explanation:
A forest covers 31,000 acres
0.8% of the forest old growth trees
There are 0.8% × 31000 = 248 acres of old growth trees
The z-score of the number of teens that transfered schools is the standard score
The obtained value of z is 5
<h3>How to determine the value of z?</h3>
The given parameters are:
- Population mean, μ = 50
- Population standard deviation, σ = 10
- Sample, x = 100
- Sample mean = 59
The z-value is calculated using:
z = (x - μ)/σ
Substitute known values in the above formula
z = (100 - 50)/10
Evaluate the difference
z = 50/10
Evaluate the quotient
z = 5
Hence, the obtained value of z is 5
Read more about z-scores at:
brainly.com/question/25638875
Answer: 20.442 seconds
Step-by-step explanation:
From the question, we are informed that Amy ran a race in 20.7 seconds and that Katie finished the race 0.258 second before Amy.
To know how long it took Katie to run the race, we subtract 0.258 seconds from 20.7 seconds. This will be:
= 20.7 - 0.258
= 20.442 seconds
