Which of the following is a solution to the inequality - 2x +3>7 ?
1 answer:
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The function
... y = 1/x
has derivative
... y' = -1/x²
which has no zeros. It is undefined at x=0, the only critical point. The derivative is negative for all values of x, so the function is decreasing everywhere in its domain.
Your function
... y = (x+1)/(x-3)
can be written as
... y = 1 +4/(x-3)
which is a version of y = 1/x that has been vertically scaled by a factor of 4, then shifted 1 unit up and 3 units to the right. Shifting the function to the right means x=3 is excluded from the domain (and the interval on which the function is decreasing).
The critical point is x=3.
The function is decreasing on (-∞, 3) ∪ (3, ∞), increasing nowhere.
In Canada in 1998 the estimated number of households written in standard decimal notation is 3939000
<u>Solution:</u>
Given that in 1998 estimated number of households that owned 2 or more vehicles was
Need to represent the number in standard decimal notation.
In this case we need to move the decimal point based on the power of 10.
In our case power of 10 = 6.
Let’s first take a number without and add six zeros on right.
So we get 3.939000000
Now multiplying above number by means moving the decimal after 6 numbers from the current position, that means
That is 3939000 is required standard decimal notation of scientific notation number