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olga nikolaevna [1]
3 years ago
13

|2x-3|=5 Absolute value

Mathematics
2 answers:
matrenka [14]3 years ago
4 0

Answer:

this is the answer I hope it helps

x= 4,-1

sineoko [7]3 years ago
3 0

Answer:

x = 4, x = - 1

Step-by-step explanation:

The absolute value always gives a positive result, however, the expression inside can be positive or negative, that is

2x - 3 = 5 or - (2x - 3) = 5

Solving both

2x - 3 = 5 ( add 3 to both sides )

2x = 8 ( divide both sides by 2 )

x = 4

or

- (2x - 3) = 5

- 2x + 3 = 5 ( subtract 3 from both sides )

- 2x = 2 ( divide both sides by - 2 )

x = - 1

As a check

| 2(4) - 3 | = | 8 - 3 | = | 5 | = 5 ← True

| 2(- 1) - 3 | = | - 2 - 3 | = | - 5 | = 5 ← True

Thus the solutions are x = 4, x = - 1

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A colony of ants carried away 16 of your muffins. That was 4/7 of all of them! With how many did you start?​
mariarad [96]

You started with a total of 28 muffins

<h3>How to determine the amount you started with?</h3>

From the question, the given parameters are:

Proportion carried away = 16 of the total muffins

Proportion carried away = 4/7 of the total muffins

The above parameters implies that

4/7 of the total muffins = 16

Represent the amount you started with x

So, we have the following representation

4/7 of x = 16

Express as products

4/7x = 16

Make x the subject

x = 7 * 16/4

Evaluate

x = 28

Hence, the total number of muffins is 28

Read more about proportions at

brainly.com/question/16828793

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8 0
1 year ago
The two-way frequency table below shows data on behavior of students and the use of positive phone calls home as an incentive fo
Gemiola [76]

Answer:

Step-by-step explanation:

Hello!

In statistics, the relative frequency is the percentage/ proportion of times a determined event has occurred in a given experiment.

In this exercise you have to calculate the relative frequencies of the observed student's behavior, given that they received positive phone calls as an incentive and the observed student's behavior, given that they didn't receive positive phone calls as an incentive.

If "x" represent the number of observations for the category (Desirable behavior and Undesirable behavior) of interest and "n" the total number of observations in each row (Phone call and No phone call), you can calculate the relative frequencies as: f(x)= x/n

For the students that received the phone call:

n= 19 + 9= 28

The student showed desirable behavior: f(x)= 19 / 28= 0.678= 0.68

The student showed undesirable behavior: f(x)= 9 / 28= 0.678= 0.32

For the students that didn't receive the phone call:

n= 8 + 6= 14

The student showed desirable behavior: f(x)= 8 / 14= 0.678= 0.57

The student showed undesirable behavior: f(x)= 6 / 14= 0.678= 0.428= 0.43

I hope this helps!

5 0
3 years ago
What is the common difference in the arithmic sequence 30,27,24,21,18
vichka [17]
If you have two terms in a sequence, then a term decreased by the previous term=common difference

so
30 and 27

27 decreased by 30 is -3

the common differce is -3
6 0
3 years ago
Find the radius of a circle with an area of 78.5 cm2?
kipiarov [429]
Formula is Area/ Pie
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3 years ago
Ms. Gardenault's fig tree was 12.78 centimeters tall on Monday. When the height of the plant was measured on Friday, the plant w
ella [17]

Explanation is in the file

tinyurl.com/wpazsebu

6 0
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