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Charra [1.4K]
2 years ago
10

If 7 is subtracted from half of a number, the result is 14. Find the number.

Mathematics
2 answers:
serious [3.7K]2 years ago
7 0

Hey there! :-)

Let the unknown number be s.

"half of a number" means we divide s by 2.

We write it like so:

\frac{s}{2}

Now, the problem says that we subtract 7:

\frac{s}{2} -7=14

  • s/2-7=14
  • s/2=14+7
  • s/2=21
  • Multiply both sides by 2:
  • s=42

Therefore, the number is 42. Hope this helps! :)

Use the comment section to clarify your doubts.

Answered by

~A felicitous teen who helps others with a smile

Good luck. :-)

Allushta [10]2 years ago
3 0
  • If 7 is subtracted from half of a number, the result is 14.
  • Let the number be x.
  • Therefore, by the problem
  • \frac{x}{2}  - 7 = 14 \\  =  >  \frac{x}{2}  = 14 + 7 \\  =  >  \frac{x}{2}  = 21 \\  =  > x = 21 \times 2 \\  =  > x = 42

<u>Answer:</u>

<u>The </u><u>number </u><u>is </u><u>4</u><u>2</u><u>.</u>

Hope you could get an idea from here.

Doubt clarification - use comment section.

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7 0
3 years ago
Read 2 more answers
A firm that stocks lightbulbs gathers the following information: Demand = 19,500 units per year, Ordering cost = $25 per order,
vredina [299]

Answer:

Step-by-step explanation:

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a) EOQ=\sqrt{ \frac{2\times D\times O}{C}}

   EOQ=\sqrt{ \frac{2\times 19,500\times 25}{4}}

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b) Annual holding cost = 4\times(\frac{Q}{2})

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3 years ago
Solve for x. Write the smaller solution first, and the larger solution second. (x -4)(-5x +1)=0
Vesnalui [34]

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4 0
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natulia [17]

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