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schepotkina [342]
2 years ago
6

4+9+14+19+...+494 What is the arithmetic sequence answer

Mathematics
1 answer:
Volgvan2 years ago
4 0

Answer:

Step-by-step explanation:

4+9+14+...+494

d=9-4=5

\[a_{n}=a_{1}+(n-1)d\]494=4+(n-1)5\\490=(n-1)5\\n-1=98\\n=98+1=99\\S_{n}=\frac{99}{2} (4+494)\\=99*\frac{498}{2} \\=99*249\\=24,651

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Use rounding to estimate 0.93+0.18 plz help me
Anastasy [175]
0.93 = 0.9
0.18 = 0.2 

0.9 + 0.2 = 1.1

Answer 1.1
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2 years ago
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asambeis [7]

Answer:

94.92

Step-by-step explanation:

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8 0
3 years ago
Using the formula c=2r, find the circumference with diameter of 28inches. Round your answer to the nearest inch.
Furkat [3]

Radius is equal to 1/2 the diameter. The radius is 14 (28/2=14)

With your formula:

c=2*14

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HOWEVER I believe you meant

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In this instance for pi we can use 3.14 since we will be rounding anyway, so

c=28*3.14

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Rounded to be

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Note:

If we didn’t round pi out to 3.14 we would have gotten 87.964594...

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