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Sunny_sXe [5.5K]
3 years ago
15

Three less than a certain number is 12 less than twice the number. Find the number

Mathematics
1 answer:
just olya [345]3 years ago
5 0

Answer: 30

Step-by-step explanation:

15-3=12

15 × 2=30

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jasenka [17]

First, you had to switch sides of equation.

And it gave us ⇒ \frac{2}{5}t=-\frac{7}{4}

Then multiply by five from both sides of equation form.

And it gave us ⇒ 5*\frac{2}{5}t=5(-\frac{7}{4})

Simplify.

And it gave us ⇒ 2t=-\frac{35}{4}

Next, divide by two from both sides of equation form.

And it gave us ⇒ \frac{2t}{2}=-\frac{35}{4/2}

Finally, simplify.

And it gave us ⇒ t=-\frac{35}{8}

Final answer: ⇒ \boxed{t=-35/8}

Hope this helps!

And thank you for posting your question at here on brainly, and have a great day.

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marta [7]

9514 1404 393

Answer:

  • x = 19
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Step-by-step explanation:

1. A right angle has a measure of 90°. The whole is the sum of the parts.

  (2x +3)° +49° = 90°

  2x +52 = 90 . . . . . . . . divide by °, collect terms

  2x = 38 . . . . . . . . . . . . subtract 52

  x = 19 . . . . . . . . divide by 2

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2. A linear pair measures 180°. The whole is the sum of the parts.

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  x +146 = 180 . . . . . . . divide by °, collect terms

  x = 34 . . . . . . . . .subtract 146

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3. We presume this pair of angles is supposed to be supplementary. That is, their sum is 180°.

  64° +(3x -1)° = 180°

  3x +63 = 180 . . . . . . . divide by °, collect terms

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3 years ago
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Tpy6a [65]
The second pair because it would practically be a vertical line.
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3 years ago
14 POINTS ASAP WHAT IS THE MEASURE OF ANGLE A
sashaice [31]
Wow...we have lots of numbers to go through.  we know that a 6 sided figure is a hexagon and the interior angles add up to be 720°. so.....

∠A + ∠B + ∠ C + ∠D + ∠E + ∠F = 720°
(x - 60) + (x - 40) + 130 + 120 + 110 + (x - 20) = 720
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x = 160                  (divided both sides by 3)

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4 years ago
In 2–4, write Yes or No to indicate whether the expressions are equivalent. 2. 10x - 3 + 2x - 5 and 4(3x - 2) 3. 3y + 3 and 9(y
Dmitry [639]

Step-by-step explanation:

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Upon simplifying;

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4(3x - 2)

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Both expressions are equivalent - Yes!

3. 3y + 3 and 9(y + 1/3)

9(y + 1/3)

upon simplifying;

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Both expressions are not equivalent - No!

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6(3x + 1)

upon simplifying;

6(3x) + 6 (1)

18x + 6

9x + 6 + 9x

Upon simplifying;

9x + 9x + 6

18x + 6

Both expressions are equivalent - Yes!

3 0
3 years ago
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