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AnnyKZ [126]
3 years ago
8

O prove that all circles are similar, you would use similarity

Mathematics
1 answer:
Katen [24]3 years ago
4 0
All circles have the same angles, just different degrees

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-3x-4<19
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calculates the sum of the first 8 terms of an arithmetic progression starting with 3/5 and ending with 1/4
N76 [4]

We conclude that the sum of the first 8 terms of the arithmetic sequence is 17/5.

<h3>How to get the sum of the first 8 terms?</h3>

In an arithmetic sequence, the difference between any two consecutive terms is a constant.

Here we know that:

a_1 = 3/5\\a_8 = 1/4

There are 7 times the common difference between these two values, so if d is the common difference:

a_1 + 7*d = a_8\\\\3/5 + 7*d = 1/4\\\\7*d = 1/4 - 3/5 = (5 - 12)/20 = -7/20\\\\d = -1/20

Then the sum of the first 8 terms is given by:

3/5 + (3/5 - 1/20) + (3/5 - 2/20) + ... + (3/5 - 7/20)\\\\8*(3/5) - (1/20)*(1 + 2 + 3+ 4 + 5 + 6 + 7) = 3.4 = 34/10 = 17/5

So we conclude that the sum of the first 8 terms of the arithmetic sequence is 17/5.

If you want to learn more about arithmetic sequences:

brainly.com/question/6561461

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6 0
1 year ago
Write a linear equation that has m=-4 and passes through (5,9)!
sladkih [1.3K]

Answer:

y=-4x+29

Step-by-step explanation:

Using point-slope form,

y-9=-4(x-5) \\ \\ y-9=-4x+20 \\ \\ y=-4x+29

4 0
1 year ago
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