Which of the following best describes the english expression the product of two and a number minus eleven?
2 answers:
Answer: The right answer is A
Step-by-step explanation:
First of all, in the questions they ask for the product of and number, this number could be any number so
could be a letter to replace this "any number"; so the product between
and
is equal to
the last step is just minus eleven, so
minus eleven is represented as =
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Answer:
24.5
Step-by-step explanation:
A calculator or spreadsheet is good for doing this sort of computation.
_____
You add up the magnitudes of the differences between the given y-value and the corresponding value you get from the equation. For the first couple of points, these values are ...
... |3 - (0.1·1 +2.9)| = 0
... |2.5 -(0.1·6 +2.9)| = |2.5 -3.5| = 1
The computation proceeds like this for the remaining 6 points, and the numbers added. The result is 24.5.
Answer:
24,000 people read only one newspaper
12,000 people read at least two newspapers
11,000 people read at least one morning paper plus an evening paper.
64,000 people do not read any newspapers.
10,000 people read only one morning paper and one evening paper.
Step-by-step explanation:
The problem states that:
- 10 percent of the population reads the newspaper I = 10,000
- 8 percent of the population reads the newspaper I and II = 8,000
- 1 percent of the population reads the newspaper I and II an III = 1,000
- 30 percent of the population reads the newspaper III = 30,000
- 2 percent of the population reads the newspaper I and III = 2,000
- 5 percent of the population reads the newspaper III = 5,000
- 4 percent of the population reads the newspaper II and III = 4,000.
Then we have to build the Venn diagram for this: I am going to call
- A the people that read the newspaper I
- B the people that read the newspaper II
- C the people that read the newspaper III
We start this from the people that read each newspaper
- 1,000 people read each newspaper
The people that read only I and II are the number of people that read I and II minus the number of people that read I, II and III. So:
It applies for I and III
And for II and III
The problem states that 10,000 people read the newspaper I, so:
where A is the number of people that read only the newspaper I. So:
A + 7,000 + 1,000 + 1,000 = 10,000
A + 9,000 = 10,000
A = 1,000
30,000 read the newspaper II, so:
B + 7,000 + 3,000 + 1,000 = 30,000
B + 11,000 = 30,000
B = 19,000
5,000 read the newspaper III, so:
C + 1,000 + 1,000 + 1,000 = 5,000
C = 2,000
The answers:
a) Find the number of people who read only one newspaper
A + B + C = 1,000 + 21,000 + 2,000 = 24,000
24,000 people read only one newspaper
b) How many people read at least two newspapers
12,000 people read at least two newspapers
If I and III are morning papers and II is an evening paper, how many people read at least one morning paper plus an evening paper?
11,000 people read at least one morning paper plus an evening paper.
How many people do not read any newspapers?
There is 100,000 people in the town.
So, the number of people that does not read any newspaper is:
64,000 people do not read any newspapers.
How many people read only one morning paper and one evening paper?
10,000 people read only one morning paper and one evening paper.