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Nadya [2.5K]
3 years ago
12

At what x value does the function given below have a hole? f(x)=x+3/x2−9

Mathematics
1 answer:
S_A_V [24]3 years ago
4 0

Answer:

hole at x=-3

Step-by-step explanation:

The hole is the discontinuity that exists after the fraction reduces. (Still doesn't exist for original of course)

The discontinuities for this expression is when the bottom is 0. x^2-9=0 when x=3 or x=-3 since squaring either and then subtracting 9 would lead to 0.

So anyways we have (x+3)/(x^2-9)

= (x+3)/((x-3)(x+3))

Now this equals 1/(x-3) with a hole at x=-3 since the x+3 factor was "cancelled" from the denominator.

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P= 3(4)^2
P= 12^2
P = 144
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I need help with 37, 38, and 33
Sedbober [7]
I just happened to notice that 32 is incorrect, it should be A
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4 years ago
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7 0
4 years ago
Read 2 more answers
A teacher bought 7 packs of dominoes for a math game. Each pack had 55 dominoes. The teacher already had 118 dominoes to use in
Mamont248 [21]

Answer:

the teacher had 503 dominoes for the game.

Step-by-step explanation:

In order to find the answer, first you have to find the amount of dominoes the teacher purchased by multiplying the number of packs for the number of dominoes in each pack:

7*55=385

Now, since the stament indicates that the teacher already had 118 dominoes to use in the game, you have to add this amount to the number of dominoes that were purchased:

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According to this, the answer is that the teacher had 503 dominoes for the game.

8 0
3 years ago
Which statement best describes the graph of 2x−5y=−252x-5y=-25 and the graph of y=52x+5y=52x+5?
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To easily compare the two linear equations just by looking at the equation, let's rearrange this into the slope-intercept formula: y = mx + b, where m is the slope and b is the y-intercept.

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y=52x + 5
The slope is 52 and the y-intercept is 5.

Thus, we can say that the two linear equations have the same y-intercept. This is the point in the y=-axis in which the two lines intersect. They must intersect at (0,5).
6 0
3 years ago
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