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lesya692 [45]
3 years ago
13

The sum of the first 20 positive odd integers

Mathematics
1 answer:
svet-max [94.6K]3 years ago
7 0

Answer:

400

Step-by-step explanation:

We\ know\ that,\\'The\ sum\ of\ n\ no.\ positive\ odd\ integers\ is\ given\ by\ the\ formula:\\S_O=n^2\\Hence,\\Here,\\As\ n=20,\\The\ sum\ of\ the\ first\ 20\ positive\ odd\ integers=20^2=400\\

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Whoever answers correctly gets brainlist.
Vlad1618 [11]

Answer:

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Step-by-step explanation:

First you have to make the denominator the same to subtract. By find out what number they have in common. And the number was 60.  15x4=60  and 20x3=60. And whatever you do to the bottom you do for the top 19x3= 57. 13x4=52. So the form would be 57/60-52/60. Once you find the form then you subtract 57-52=5 and when you minus the denominator it stays the same. so the ANSWER would be 5/60.

4 0
3 years ago
Nita wants to buy a new keyboard for her computer. She will buy the keyboard when it is on sale for under \$50$50dollar sign, 50
myrzilka [38]

Answer:

k

Step-by-step explanation:

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This means that Nita will buy the computer, when its price (k) is less than $50. We know that sign < represents less than.

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7 0
4 years ago
Read 2 more answers
A rectangular room is 15 meters longer than it is wide, and it’s perimeter is 26 meters. Find the dimensions of the room
Julli [10]

Answer:

the room is -1m by 14m

Step-by-step explanation:

what you do to find it is first find x.

the perimeter is 26, and one side is 15 meters longer than the other(twice).

So the equation is:

x + (x + 15) + x + (x + 15) = 26

2x + 2(x + 15) = 26

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Hope this helps. if this is the best answer, mark Brainliest.

If not, hope it helps anyway.

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3 years ago
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allochka39001 [22]
I’m pretty sure it’s 30in
4 0
4 years ago
Read 2 more answers
How are you supposed to solve this
bagirrra123 [75]
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3 years ago
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