A number, x, rounded to 2 significant figures is 1300Write down the error interval for x.
1 answer:
Answer:
.
Step-by-step explanation:
It is given that a number, x, rounded to 2 significant figures is 1300.
It is possible if,
1. The value of x is greater than of equal to 1250 and less than or equal to 1300.
i.e., ...(1)
2. The value of x is greater than of equal to 1300 and less than 1350.
i.e., ...(2)
On combining (1) and (2), we get
1350 is not included in the error interval for x.
Interval notation is .
Therefore, the error interval for x is .
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Answer:
Step-by-step explanation:
Let
y ----> the number of rides
x ---> the number of games
we know that
The number of rides multiplied by $1 plus the number of games multiplied by $0.25 must be equal to $12 (the dollar amount Koran is spending)
so
The equation that represent this situation is
has critical points where the derivative is 0:
The second derivative is
and , which indicates a local minimum at
with a value of
.
At the endpoints of [-2, 2], we have and
, so that
has an absolute minimum of
and an absolute maximum of
on [-2, 2].
So we have