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oksian1 [2.3K]
3 years ago
12

Which equation is an identity?​

Mathematics
2 answers:
kirza4 [7]3 years ago
6 0

Answer:

Option (3).

Step-by-step explanation:

Option (1).

3(x - 1) = x + 2(x + 1) + 1

3x - 3 = x + 2x + 2 + 1

3x - 3 = 3x + 3 [Not True]

Therefore, this equation is not an identity.

Option (2).

x - 4(x + 1) = -3(x + 1) + 1

x - 4x - 4 = -3x - 3 + 1

-3x - 4 = -3x - 2 [Not true]

Therefore, this equation is not an identity.

Option (3).

2x + 3 = \frac{1}{2}(4x + 2) + 2

2x + 3 = 2x + 1 + 2

2x + 3 = 2x + 3 [True]

Therefore, this equation is an identity.

Option (4).

\frac{1}{2}(6x-3)=3(x+1)-x-2

3x - 1.5 = 3x + 3 - x - 2

3x - 1.5 = 2x + 1 [Not true]

Therefore, this equation is not an identity.

iris [78.8K]3 years ago
5 0

Answer:

Option (3).

Step-by-step explanation:

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Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Five buckets all had different amounts of water in them. tom poured all the water together and divided the water equally among t
guajiro [1.7K]

(A) Mean best describes the amount of water in each bucket.

<h3>What is mean?</h3>
  • A dataset's mean (also known as the arithmetic mean, as opposed to the geometric mean) is the sum of all values divided by the total number of values.
  • It is the most widely used measure of central tendency and is frequently referred to as the "average."
  • In mathematics, particularly statistics, there are several types of means.
  • Each mean is used to summarize a specific set of data, often in order to better understand the overall value (magnitude and sign) of a given data set.
  • In two simple steps, we can calculate the mean or average of a data set: add up all of the values to find the sum.
  • Subtract the sum from the total number of values in the data set.

Therefore, (A) mean best describes the amount of water in each bucket.

Know more about mean here:

brainly.com/question/1136789

#SPJ4

The correct question is given below:
Five buckets each had different amounts of water in them. Tom poured all of the water together and then divided the water equally among the buckets. Which term best describes the amount of water in each bucket?

A. mean

B. range

C. outlier

D. mean absolute deviation

8 0
2 years ago
Find the value of f(-5).
pshichka [43]
<h3>Answer:   4</h3>

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

Explanation:

Locate -5 on the x axis number line. Draw an arrow going upward until you reach the function curve. Then move horizontally until you reach the y axis. You should arrive at y = 4. Therefore, f(-5) = 4 and it means the point (-5, 4) is on the function curve.

Check out the diagram below.

5 0
3 years ago
Answer this pleaseee!!!
mart [117]
The answer would be B
4 0
3 years ago
Order the following numbers from least to greatest.​
IRISSAK [1]
-18/8, /5, 3pi/4, 2.5
8 0
3 years ago
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