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Blizzard [7]
3 years ago
11

Which factoring method would be best to factor x^2 - 9?

Mathematics
1 answer:
Vinil7 [7]3 years ago
8 0

Answer:

  D.  difference of squares

Step-by-step explanation:

Both of the terms x^2 and 9 are squares, so their difference is the difference of squares. The factorization of that is a "special form" that can be usefully memorized.

  a^2 -b^2 = (a -b)(a +b)

  x^2 -9 = (x -3)(x +3)

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The variable in a relation who’s value depends on the value of the independent variable is called what?
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f(x)=y

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Any questions please feel free to ask. Thanks
3 0
3 years ago
Do consumers spend more on a trip to Target or​ Walmart? Suppose researchers interested in this question collected a systematic
ra1l [238]

Answer:

Step-by-step explanation:

Confidence interval for the difference between two population means is written in the form,

difference in sample means ± margin of error

The difference in sample means is the point estimate for the difference in population means. In the given scenario, the point estimate is the difference in mean amount spent by the sampled customers on a trip to Target or​ Walmart.

Since the interval was (- $15.05​,$2.95), it means that the lower limit is - $15.05 and the upper limit us $2.95.

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5 0
4 years ago
X + 5 ≤ 13 what's the answer for this question?​
wariber [46]

Answer:

Inequality Form: x ≤ 8

Interval Notation: (-∞,8]

Step-by-step explanation:

x + 5 ≤ 13

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Interval Notation: (-∞,8]

6 0
3 years ago
Find the value of the nearest tenth<br> X=
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Answer:

12,7

Step-by-step explanation:

use pathogaras theorem

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8 0
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Step-by-step explanation:

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