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Talja [164]
2 years ago
8

Please answer this question, i need it to be explained also.please

Mathematics
2 answers:
Anettt [7]2 years ago
8 0

Answer:

6.6

Step-by-step explanation:

If you minus 54.2 and 47.6 you get 6.6

54.2

-<u>47.6</u>

6.6

QveST [7]2 years ago
3 0

Answer:

2.64

Step-by-step explanation:

54.2 - 47.6 = 6.6

Selena's tree is 6.6 CMS taller.

We need to convert that into inches, I believe.

1 cm = 0.4 inches

6.6 cms into inches = 2.5984252, est. 2.6

Not an answer choice, another way to find this is

6.6 x 0.4 = 2.64

Which is an answer choice, so your answer should be the last one, 2.64.

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So even postive integers are by defention in form 2k where k is a natural number so
let the sum of even integers to n=S
S=2(1+2+3+4+5+6+7+8+......+k-1+k
divide bith sides of equation 1 by 2
0.5S=1+2+3+4+5+...........+k-1+k
S=2(k+(k-1)+..............................+2+1)
divide both sides of equation 2 by 2
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by adding both we will get
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S=(k+1)(k)
so the sum will be equal to
S=
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so let us test the equation
for the first 3 even number there sums will be
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gave us the same answer so our equation is correct
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