Answer:
Question 1:
- 2. Households that possess only cellphones.
- 5. Households without telephones.
As the pollster used the telephone directory, they will get the numbers of listed people in that community. Cellphones are not listed along with households with telephones so these will be underrepresented.
Question 2:
- 1. Lower income people (cannot afford a phone).
- 2. people who choose not to list their numbers people who choose not to have phones.
Question 3:
- 2. Households with unlisted numbers
- 4. Households with land-line telephones that have moved into the community since the most recent community telephone directory was printed.
Households with unlisted numbers will still be called because the person is using random dialling which means that even if the number is not listed, it can still be called. Households with landlines will most definitely be reachable as well.
If you divide 20 acres into 1/4 sections you'll get
20 ÷ 1/4 sections. When you divide fractions, you just multiply the reciprocal.
20 ÷ 1/4 =
20 × 4/1 = 80 sections
That would be 4 gallons every minute!
Also: I don't see a graph..? Is there supposed to be one attached?
Good luck!
Answer:
Step-by-step explanation:
Question says that it uses 120 feet of fencing material to enclose three sides of the play area. This means there are 3 sides. Putting this into equation, we have something like this.
120 = L + 2W
Where
LW = area.
Again, in order to maximize the area with the given fencing, from the equation written above, then Width, w must be = 30 feet and length, l must be = 60
On substituting, we have
A = LW = (120 - 2W) W
From the first equation, making L the subject of the formula, we have this
L = 120 - 2W, which then we substituted above.
On simplification, we have
L = 120W -2W²
Differentiating, we have
A' = 120 - 4W = 0
Remember that W = 30
So therefore, L = 120 - 2(30) = 60 feet
An equilateral triangle.
all sides are the same so the higth of the object will be the same as length of the shadow.
