HELP!!!

Mathematics

2 answers:

irina1246 [14]2 years ago

8 0

Answer:

x=-120

x=-102

Step-by-step explanation:

Lady bird [3.3K]2 years ago

4 0

the answer is 210 and 201

hope this helps

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Which shows one way to determine the factors of x^3 - 9x^2 + 5x - 45 by grouping ?

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Answers:

Domain is (-4, 3]
Range is (-5, 5]

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Explanation:

The domain is the set of allowed x input values, aka the set of all allowed x coordinates of the points. We see that $-4 < x \le 3$ . It might help to draw vertical lines through the endpoints until you reach the x axis. Note the open hole at x = -4 to indicate we do not include this as part of the domain (hence the lack of "or equal to" for the first inequality sign).

The interval $-4 < x \le 3$ then can be condensed into the shorthand form (-4, 3] which is the domain in interval notation.

It says: x is between -4 and 3. It can't equal -4 but it can equal 3.

So the use of parenthesis versus square brackets tells the reader which endpoint is included or not.

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The range describes all possible y outputs. We see that y = 5 is the largest it gets and y = -5 is the lower bound. It might help to draw horizontal lines through the endpoints until you reach the y axis. The open hole means -5 is not part of the range.

The range as a compound inequality is $-5 < y \le 5$ . This condenses into the shorthand of (-5, 5] which is the range in interval notation.