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Morgarella [4.7K]
3 years ago
5

The answer is 3.8 and I CANT FIGURE IT OUT

Mathematics
1 answer:
Alex17521 [72]3 years ago
8 0
3.8 is the answer you already figured it out
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B. 165 degree angle

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Please Help ASAP!! Will mark brainliest! Please Help, I know its a lot but please help!
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1st: 0.04, 0.04, 0.25, 0.4

2nd: 0.06, 0.16, 0.6, 60

3rd: 0.07, 0.7, 0.075, 0.75, 7.5

4th: 0.02, 0.18, 0.2, 200

5th: 0.009, 0.09, 0.9, 0.95

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Step-by-step explanation:

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A password is 4 characters long, consisting of 2 letters and 2 numbers. The password must begin and end with a
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Step-by-step explanation:

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What is the best estimate for the product of 289 and 7?
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3 years ago
Arrange the geometric series from least to greatest based on the value of their sums.
son4ous [18]

Answer:

80 < 93 < 121 < 127

Step-by-step explanation:

For a geometric series,

\sum_{t=1}^{n}a(r)^{t-1}

Formula to be used,

Sum of t terms of a geometric series = \frac{a(r^t-1)}{r-1}

Here t = number of terms

a = first term

r = common ratio

1). \sum_{t=1}^{5}3(2)^{t-1}

   First term of this series 'a' = 3

   Common ratio 'r' = 2

   Number of terms 't' = 5

   Therefore, sum of 5 terms of the series = \frac{3(2^5-1)}{(2-1)}

                                                                      = 93

2). \sum_{t=1}^{7}(2)^{t-1}

   First term 'a' = 1

   Common ratio 'r' = 2

   Number of terms 't' = 7

   Sum of 7 terms of this series = \frac{1(2^7-1)}{(2-1)}

                                                    = 127

3). \sum_{t=1}^{5}(3)^{t-1}

    First term 'a' = 1

    Common ratio 'r' = 3

    Number of terms 't' = 5

   Therefore, sum of 5 terms = \frac{1(3^5-1)}{3-1}

                                                 = 121

4). \sum_{t=1}^{4}2(3)^{t-1}

    First term 'a' = 2

    Common ratio 'r' = 3

    Number of terms 't' = 4

    Therefore, sum of 4 terms of the series = \frac{2(3^4-1)}{3-1}

                                                                       = 80

    80 < 93 < 121 < 127 will be the answer.

4 0
2 years ago
Read 2 more answers
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