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schepotkina [342]
2 years ago
9

What is the easiest way of simplifying √27

Mathematics
2 answers:
RUDIKE [14]2 years ago
8 0

\sqrt{27 } \\  \\  =  3 \sqrt{3}

hoa [83]2 years ago
3 0

Answer: 3\sqrt{3}

Step-by-step explanation:

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1/20

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840 students attend Northfield middle school. 65%of students earned a perfect attendance award. How many students didn't earn th
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546

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840 x 0.65 = answer .. in this case 546

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2 years ago
In an arithmetic series, the sum of the first 12 terms is equal to ten times the sum of the first 3 terms. If the first term is
arlik [135]

Answer:

Step-by-step explanation:

The formula for determining the sum of the first n terms of an arithmetic sequence is expressed as

Sn = n/2[2a + (n - 1)d]

Where

n represents the number of terms in the arithmetic sequence.

d represents the common difference of the terms in the arithmetic sequence.

a represents the first term of the arithmetic sequence.

If a = 5, the expression for the sum of the first 12 terms is

S12 = 12/2[2 × 5 + (12 - 1)d]

S12 = 6[10 + 11d]

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Also, the expression for the sum of the first 3 terms is

S3 = 3/2[2 × 5 + (3 - 1)d]

S3 = 1.5[10 + 2d]

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The sum of the first 12 terms is equal to ten times the sum of the first 3 terms. Therefore,

60 + 66d = 10(15 + 3d)

60 + 66d = 150 + 30d

66d + 30d = 150 - 60

36d = 90

d = 90/36

d = 2.5

For S20,

S20 = 20/2[2 × 5 + (20 - 1)2.5]

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3 years ago
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