Los Angeles is about 385 miles from San Francisco. How far apart would the cities be on a map with a scale of 1 in. = 25 mi? If
2 answers:
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Answer:
-3.69
Step-by-step explanation:
Exponential equations can be solved by taking Ln (natural logarithm) of both sides. The rule we need to know is:
Now lets work out this problem:
Using calculator, we take the values of Ln 16 and Ln 13 as:
Ln 16 = 2.7726
Ln 13 = 2.5649
Now, we can solve for x:
x is -3.69 (rounded to 2 decimal places)
Answer:
B. - 4x - 5
Step-by-step explanation:
(p о n) (x) is the same thing as (p(n(x))
We know n(x) = x - 5, so let's input that into our expression
(p(x - 5))
Since we know p(x) = x^2 + 6x, let's replace the x with the new value x-5. Now our expression is:
p(x) = (x - 5)^2 + 6(x - 5)
Now all we have to do is simplify.
(x - 5)^2 is the same as: (x - 5)(x - 5)
Using the foil method, it simplifies to: x^2 - 10x + 25
6 (x - 5) = 6x - 30
Now our expression is: x^2 - 10x + 25 + 6x - 30
Combine like terms: x^2 - 4x - 5
The expression is: - 4x - 5
The first step for solving this problem is to know that in order to divide by a fraction,, we must multiply by the reciprocal of that fraction. This will look like the following:
× 9x
Write -6x as a difference.
× 9x
Factor out x from x² + 2x.
× 9x
Factor out -8 from -8(x + 2).
× 9x
Factor out x + 2 from the denominator (bottom) of the expression.
× 9x
Reduce the fraction with x + 2
× 9x
Finally,, calculate the product to find your final answer.
This means that the correct answer to your question is going to be option B.
Let me know if you have any further questions.
:)
Write -6x as a difference.
Factor out x from x² + 2x.
Factor out -8 from -8(x + 2).
Factor out x + 2 from the denominator (bottom) of the expression.
Reduce the fraction with x + 2
Finally,, calculate the product to find your final answer.
This means that the correct answer to your question is going to be option B.
Let me know if you have any further questions.
:)