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posledela
3 years ago
9

5. Based on the data in the table, how many

Mathematics
1 answer:
Montano1993 [528]3 years ago
5 0
You can expect 76 students in 2018 because from 2014 to 2015 it went up 6, then 8, then 10 so it would increase 12 students from 2017 to 2018
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(A) If the 13th and 38th terms of an arithmetic sequence are -53 and -128,
grigory [225]

9514 1404 393

Answer:

  (A) -2018

  (B) 5/36

Step-by-step explanation:

(A) The rate of change between any pair of terms in an arithmetic sequence is the same:

  (a668 -a38)/(668 -38) = (a38 -a13)/(38 -13)

  a668/630 = a38/630 +(a38 -a13)/25 . . . . add a38/630 to both sides

  a668 = a38 +630/25(a38 -a13) = -128 +25.2(-128 -(-53)) = -128 -1890

  a668 = -2018

__

(B) The sum of an infinite geometric series is ...

  S = a1/(1 -r) . . . . . . for first term a1 and common ratio r

We are given S = 6, a1 = 5, so we can find r to be ...

  6 = 5/(1 -r)

  1 -r = 5/6

  1 -5/6 = r = 1/6

Then the 3rd term is ...

  a3 = 5×(1/6)^(3 -1) = 5/36

7 0
3 years ago
What is the expanded form of this number?
Jlenok [28]

Answer:

Number 2

Step-by-step explanation:

Number two. Okay?

5 0
3 years ago
Please answer clear i need answers now please
Salsk061 [2.6K]

Answer:

The answers would be:

9: $421.54

10: $872

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13: $626.26

14: $3,981.22

15: $1,110.28

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5 0
3 years ago
What is the scientific notation of 7,000,000
creativ13 [48]
Your number would be 10 and the exponet would be 6
4 0
3 years ago
Read 2 more answers
HELP 20 POINTS PLZ RAHHHH
schepotkina [342]

Answer:

answer is option D : 42m+12

7 0
3 years ago
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