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Elanso [62]
3 years ago
14

Simplify without the absolute value |x+3| ; if x=2

Mathematics
2 answers:
Alja [10]3 years ago
4 0

ANSWER

5

EXPLANATION

We want to simplify:

|x + 3|

when x=2.

We substitute x=2 into the absolute value expression to obtain:

|2 + 3|  =  |5|

The about value of 5 means what is the distance of 5 from zero on the real number line.

|2 + 3|  =  |5|  = 5

sesenic [268]3 years ago
3 0

Answer:

Step-by-step explanation:

Actually, |x+3| is in simplest form.

However, this can be written as a 2-part function:

x + 3 for x > -3

-(x + 3) for x < -3.

If x = 2, then |x+3| equals |2+3|  =  5

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In Lucille’s class, 35% of the students have blond hair. There are 20 students in the class. How many students have blond hair.
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Answer:

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Step-by-step explanation:

1. We assume, that the number 20 is 100% - because it's the output value of the task.

2. We assume, that x is the value we are looking for.

3. If 20 is 100%, so we can write it down as 20=100%.

4. We know, that x is 35% of the output value, so we can write it down as x=35%.

5. Now we have two simple equations:

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20/x=100%/35%

6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 35% of 20

20/x=100/35

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7=x

x=7

now we have:

35% of 20=7

we multiply both sides by x

then we divide both sides by 2.85714285714 to get x

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