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DiKsa [7]
3 years ago
10

Step-by-step explanation will be very helpful: -4x ≥ 21

Mathematics
2 answers:
kirill [66]3 years ago
6 0

-4x>21

-4x>-4x

x>17

first you have to subtract

Step-by-step explanation:

  1. subtract -4 to both sides
  2. cancel out the -4 bring down the x with the greater than equal to symbol and the amswer which is 17
  3. answer is x greater than equal to 17

olchik [2.2K]3 years ago
3 0

Answer:

x≤ -21/4

Step-by-step explanation:

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Solve the equation k+10=27 k=
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Steps to solve:

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8 0
4 years ago
What is its domain? <br> What is its range? <br><br> Write the answer in interval notation.
gavmur [86]

Answers:

Domain = [-3, 3]

Range = [-1, 2]

=============================================

Explanation:

The domain is the set of all allowed x inputs. Visually, the left-most point is when x = -3, so -3 is the smallest allowed x input. We have a closed circle at this endpoint, so this endpoint x value is included. In contrast, if you had an open circle, then you would exclude the endpoint.

Similarly, we have a closed endpoint at the other side as well when x = 3. This is the largest allowed x value. The domain is the set of x values such that -3 \le x \le 3 meaning x is between -3 and 3, including both endpoints. This translates to the interval notation of [-3, 3]. The square brackets say "include the endpoint".

------------

The range is the set of possible y outputs of a function. The lowest the function goes is when y = -1, and the highest is when y = 2. We include both endpoints. The range as a compound inequality is -1 \le y \le 2 which converts to the interval notation of [-1, 2]

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