Answer:
80%
Step-by-step explanation:
1/5 is about 20%, so the remaining 4/5 is the remaining 80% of the air
Answer:

Step-by-step explanation:
Sum the frequency column to find the total number of students
total = 2 + 9 + 5 + 5 + 3 = 24
number of students finished in less than 20 mins = 2 + 9 + 5 = 16
fraction of students =
= 
Answer:

Step-by-step explanation:
<u><em>The picture of the question in the attached figure</em></u>
step 1
Find the slope
The formula to calculate the slope between two points is equal to

we have
(-2,-2) and (2,2)
substitute the values

step 2
Find the equation of the line in point slope form

we have

substitute


Answer:
40
Step-by-step explanation: