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Tresset [83]
2 years ago
10

R17 is greater than or equal to 545.7

Mathematics
1 answer:
zhuklara [117]2 years ago
7 0

Answer:

r17 is that a mistake or actually the number?

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the price of milk found by dividing its cost in cents by its volume in gallon. what are the units in words?
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All of the following are equivalent to 2(2 a+ b) + 8 except __________
Masteriza [31]
2 * (2a + b) + 8 = 4a + 2b + 8
------------------------------------------
A.  =
B.  =
C.  ≠      4* (a + b + 2) = 4a + 4b + 8
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5 0
3 years ago
before tomorrow can I have a quick answer and maybe an explanation on how to answer these kinds of questions overall? need some
MA_775_DIABLO [31]

Answer:

  a) maximum; the parabola opens downward

  b) positive; it must lie above the x-axis

  c) x = 1.5

Step-by-step explanation:

The x-intercepts of a function are the points where the graph of the function crosses the x-axis. The y-values there are zero.

The "differences" of a function are related to the average slope between adjacent points. Second differences are related to the rate of change of the slope of the function. When <em>second differences are negative</em>, as here, the slope of the quadratic function is decreasing, becoming more negative. We say the <em>curvature</em> of the function is <em>negatve</em>, and that it <em>opens downward</em>.

__

<h3>a, b.</h3>

If the graph of the parabola opens downward, and it crosses the x-axis, it must have a <em>maximum</em> that is a <em>positive value of y</em>.

__

<h3>c.</h3>

The graph of a parabola is symmetrical about its vertex. That means points on the same horizontal line are the same distance from the line of symmetry, which must go through the vertex. The x-coordinate of the vertex will be the x-coordinate of the midpoint between the two x-intercepts:

  x = (-2 +5)/2 = 3/2

The x-coordinate of the vertex is x = 1.5.

______

<em>Additional comment</em>

The attachment shows a table with three evenly-spaced points on the curve. The calculations show first differences (d1) and second differences (d2). You can see that the sign of the second diffference is negative, in agreement with the given conditions.

3 0
2 years ago
Can anyone answer this problem in their head. No calculator or paper.
rodikova [14]
7,393,420,225 is the answer tk the problem without using calculator.
7 0
3 years ago
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