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mafiozo [28]
3 years ago
6

9.

Mathematics
1 answer:
RoseWind [281]3 years ago
5 0

Answer:

  C.  I & III

Step-by-step explanation:

I simplifies to ...

  2(6x +15 -5x) +4 = 40

  12x +30 -10x +4 = 40

  2x +34 = 40

__

II simplifies to ...

  40 = 2(15 -x) +4

  40 = 30 -2x +4

  40 = -2x +34 . . . . . . not equivalent to I (sign of x-term is different)

__

III simplifies to ...

  12x +30 -10x +4 = 40

  2x +34 = 40 . . . . . . equivalent to I

___

I & III are equivalent

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Solve the inequality: -4x+4 < = -20. Write the solution using interval notation
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Given the inequality:

-4x+4\leqslant-20

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\begin{gathered} -4x+4-4\leqslant-20-4 \\ -4x\leqslant-24 \end{gathered}

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Note: When you divide or multiply by a negative number in inequality, the inequality sign reverses.

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\begin{gathered} \frac{-4x}{-4}\geqslant\frac{-24}{-4} \\ x\geqslant6 \end{gathered}

Next, we write our result in interval notation.

Since the value is greater than or equal to, we use the close bracket '['.

Therefore, the solution to the inequality in interval notation is:

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2 years ago
Use a unit rate to find the unknown value.​
inessss [21]

Answer:

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Step-by-step explanation:

You can think of it 2 ways the first one is called the "bat and ball" method which is 12x15 then u divide it by 30. The other methos only works on very few if you look at the 30/15 one 15 is half of 30 so when you look at 12 half of that would be 6. Hope this helps :)

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2 years ago
HELP OMGGGGGGGGG PLSSS
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Below.

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