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yanalaym [24]
2 years ago
12

Plz do this, I’m so exhausted. Thxx

Mathematics
2 answers:
brilliants [131]2 years ago
3 0

Answer:

12) B --> x < 8/3

13) B --> x ≤ 1/6

Step-by-step explanation:

12) Solving inequalities is just like solving normal equations where you and add, subtract, multiply and divide sides by the same value. Keep in mind dividing or multiplying by a negative flips the sign:

x - 10 < 6 - 5x

Add 5x to both sides to combine the x terms:

x - 10 < 6 - 5x

+5x          +5x

6x - 10 < 6

Add 10 to both sides to isolate the x term:

6x - 10 < 6

+10       +10

6x < 16

Now, divide by 6 on both sides:

x < 8/3, this is B

13) Simplify 2 - 4:

2-3(2x + 1) ≤ 6x(-2)

Distribute:

2 - 6x - 3 ≤ -12x

Add 12x to both sides and combine like terms:

6x - 1 ≤ 0

Add 1 to both sides:

6x ≤ 1

Divide by 6:

x ≤ 1/6, this is B

Anna [14]2 years ago
3 0
12. B


X- 10 < 6-5x


So I brought over the five x to be on the side where the x is and then I placed the others on the other side so…


5x + x < 6 + 10

6x < 16

Then I divided both sides by 6
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Step-by-step explanation:

In Question it's given Double a number, increased by 15, is 49.

Let the number be x

According to question -

2x + 15 = 49

When solving this -

2x = 49 - 15

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x = 17.

<u>Here the number is 17.</u>

<u>Translation  / Tradução</u>

Em questão, o número duplo, aumentado em 15, é 49.

Seja o número x

De acordo com a pergunta -

2x + 15 = 49

Ao resolver isso -

2x = 49 - 15

x = 34/2

x = 17.

<u>Aqui o número é 17.</u>

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