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lesantik [10]
3 years ago
12

Prove: an odd number squared is an odd number

Mathematics
2 answers:
ollegr [7]3 years ago
7 0
An odd number squared so let’s say 7 for example looks like this: 7^2. This just means 7x7. In elementary you learn the an odd number times an odd number is odd. This is the same. Therefore any odd number squared is an odd number.
densk [106]3 years ago
3 0

Answer:

2(2n² + 2n) + 1

Step-by-step explanation:

(2n + 1)² can also written as

(2n + 1) × (2n + 1)

= 4n² + 2n + 2n + 1

= 4n² + 4n + 1

= 2(2n² + 2n) + 1

= an odd

Hence Proved!

 

<u>-TheUnknownScientist</u><u> 72</u>

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melissa pays 18.144

Step-by-step explanation:

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anyanavicka [17]

Answer:

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5 0
4 years ago
What is the average of 143, 98, and 128
asambeis [7]
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8 0
4 years ago
Denise wants to cover a 21.75 square foot wall with weathered wood. If each box of weathered wood contains 1.5 square feet of wo
natka813 [3]

Answer: 15 boxes

Step-by-step explanation:

From the question, we are informed that Denise wants to cover a 21.75 square foot wall with weathered wood and that each box of weathered wood contains 1.5 square feet of wood.

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= 21.75/1.5

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= 15 boxes approximately

6 0
3 years ago
Plz help me with all 4 questions this is worth 10
vfiekz [6]
Hello! I can help you with this! It asks for a ratio, so we have to solve it in that format. Although, there are different ways of solving it.

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2. The ratio for this question is 9/4 : 1/2 For the next question, we repeat the steps for dividing fractions. Keep, Change, Flip. 9/4 * 2/1 is 18/4 or 4 1/2 in simplest form. Sally's running speed is 4 1/2 miles per hour.

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4. Then we repeat the steps done in question #3, and incorporate it in this problem. Going back to question #2, the unit rate was 4 1/2 miles per hour. All we have to do is multiply by 3. 9/2 * 3/1 is 27/2 or 13 1/2 in simplest form. Sally can run 13 1/2 miles in 3 hours.
3 0
4 years ago
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