25 POINTS
1 answer:
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Answer with Step-by-step explanation:
a.
x is a real number
Therefore, the set={-1,1}
b.x is a positive integer less than 12
Therefore, the value of x are
1,2,3,4,5,6,7,8,9,10,11
Set={1,2,3,4,5,6,7,8,9,10,11}
c.x is a square of an integer and x<100
Therefore, the value of x can be
1,4,9,16,25,36,49,64,81
Set={1,4,9,16,25,36,49,64,81}
d.x is an integer such that
But x is an integer
and
are not integers.
Therefore, there is no integer element which satisfied
Set=Null set=
Answer:
The inequality representing how many hours he should work in order to reach his goal would be
where represents the number of hours Sean works.
Step-by-step explanation:
Hourly earnings of Sean from after school job = $6.70
Let Sean work for hours in order to earn at least $155.
We will use unitary method to find earning for hours.
If 1 hour earnings = $6.70
∴ in hours earnings in dollars would be =
Now, we know Sean needs at least $155 to buy a new video game.
This means his earnings working hours must be at least $155.
Thus, the inequality representing how many hours he should work in order to reach his goal would be
Dividing both sides by 6.7.
(Answer)
Thus, Sean should work a minimum of 23.14 hours to earn at least $155.