Answer:
1 solution: (1, 4)
Step-by-step explanation:
The two lines shown intersect ONCE, at (1, 4). This (1, 4) is the solution. There is only one solution.
To work out how long each student will take:
Alex:
60 pages / 12 pages = 5 lots of 12 pages
5 lots multiplied by 10 mins = 50 mins
It will take Alex 50 minutes to finish the book
Jenna:
60 pages / 15 pages = 4 lots of 15 pages
4 lots multiplied by 12 mins = 48 mins
It will take Jenna 48 minutes to finish the book
Therefor Jenna will finish the book first
Required area of shaded portion
= Area of square ABCD - 4 × area of one quadrant
Answer:
You can find the given attachment
Answer:
the mean of the age distribution is 20
Step-by-step explanation:
Question is
A local utility company wanted to gather data on the age of air conditioners that people have in their homes. The company took a random sample of 200 residents of a large city and asked if the residents had an air conditioner, and if they did, how old it was. Below is the distribution in the reported ages of the air conditioners.
the graph is attached below
find the mean of the age distribution closer to 15, 20, or 25 years
In the given graph the distribution is centered at 20
So the mean of the age distribution is 20