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Liula [17]
2 years ago
5

|6x|+3=21 solve for X (absolute value)​

Mathematics
2 answers:
Fudgin [204]2 years ago
6 0

Answer:

x=3\text{ or } x=-3

Step-by-step explanation:

So we have the equation:

|6x|+3=21

First, subtract 3 from both sides:

|6x|=18

Definition of absolute value:

6x=18\text{ or } 6x=-18

Divide both sides by 6 for both equations:

x=3\text{ or } x=-3

And we're done!

Pavlova-9 [17]2 years ago
6 0

Answer:

x=3 and x=-3

Step-by-step explanation:

\left|6x\right|+3=21\\

Subtract 3 to both sides:

\left|6x\right|+3-3=21-3\\|6x|=18

Apply the absolute rule: If |a| = b and b > 0, a = -b or a = b.

Thus,

Case 1:

6x=18

Divide both sides by 6:

x=3

Case 2:

6x=-18

Divide both sides by 6:

x=-3

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ANSWER:

d = 15

The swimmer swam 48 kilometres in 15 days.

STEP-BY-STEP EXPLANATION:

Let d = total no. of days the swimmer swam

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Average no. of kilometres swam daily = 3.2

THEREFORE:

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3 years ago
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aev [14]

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<h3>What is the combination formula?</h3>

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by:

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Step-by-step explanation:

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In this order, the x = 8 and next we add 1 (case 6) ⇒ x=9. We add 2 (case 7) x+=2 ⇒ x=10. Then we rest 1 (case 8) ⇒ x=9 and then we add 1 again as in case 9 ⇒ x=11.

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