The area of a certain desert desert one is five times the area of another desert desert 2 if the sum of their areas is 24, 000,
2 answers:
Answer:
The area of desert one is 20,000,000 square miles and the area of desert 2 is 4,000,000 square miles.
Step-by-step explanation:
Consider the provided information.
The area of a certain desert desert one is five times the area of another desert desert 2
Let the area of desert 2 is x.
Then the area of desert one is 5x.
The sum of their areas is 24,000,000 square miles.
Therefore,
Hence the area of desert 2 is 4,000,000
The area of desert one is 5x = 5×4,000,000 = 20,000,000
Hence, the area of desert one is 20,000,000 square miles and the area of desert 2 is 4,000,000 square miles.
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9514 1404 393
Answer:
(a) none of the above
Step-by-step explanation:
The largest exponent in the function shown is 2. That makes it a 2nd-degree function, also called a quadratic function. The graph of such a function is a parabola -- a U-shaped curve.
The coefficient of the highest-degree term is the "leading coefficient." In this case, that is the coefficient of the x² term, which is 1. When the leading coefficient of an even-degree function is positive, the U curve has its open end at the top of the graph. We say it "opens upward." (When the leading coefficient is negative, the curve opens downward.)
This means the bottom of the U is the minimum value the function has. For a quadratic in the form ax²+bx+c, the horizontal location of the minimum on the graph is at x=-b/(2a). This extreme point on the curve is called the "vertex."
This function has a=1, b=1, and c=3. The minimum of the function is where ...
x = -b/(2·a) = -1/(2·1) = -1/2
This value is not listed among the answer choices, so the correct choice for this function is ...
none of the above
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The attached graph of the function confirms that the minimum is located at x=-1/2
_____
<em>Additional comment</em>
When you're studying quadratic functions, there are few formulas that you might want to keep handy. The formula for the location of the vertex is one of them.
