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vitfil [10]
4 years ago
7

Determine 8th term in the

Mathematics
1 answer:
Dmitry_Shevchenko [17]4 years ago
3 0

Answer:

- 1280

Step-by-step explanation:

The n th term of a geometric sequence is

a_{n} = a₁ (r)^{n-1}

here a₁ = - 10 and r = 2, hence

a_{8} = - 10 × 2^{7} = - 10 × 128 = - 1280

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Step-by-step explanation:

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3 years ago
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Aleks04 [339]

Answer:

15w³

Step-by-step explanation:

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8 0
3 years ago
David bought 3 dvds and 4 books for $40 at a yard sale. Anna bought 1 dvd and 6 books for $18. How much did each dvd and book co
Ber [7]

Answer:

A book is worth $1 and a DVD is worth $12.

Step-by-step explanation:

The equations (2 unknowns and two equations, d is for a DVD and b is for a book):

For David: 3d+4b=40

For Anna: d+6b=18

Now multiply the second equation with -3 and add to the first equation:

3d+4b=40

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Combined equation: −14b=−14 and b=1 (means that each book is worth $1).

 

Now for DVD price, use the second equation:

d=18−6 or d=12 (means that each DVD  is worth $12).

A book is worth $1 and a DVD is worth $12.

8 0
3 years ago
Find m<LMN if m<LMT=23 degree and m<TMN=144 degree​
rodikova [14]

Answer:

∠LMN = 167°

Step-by-step explanation:

∠LMT = 23°

∠TMN = 144°

∠LMN = ∠LMT + ∠TMN

∠LMN = 23° + 144°

∠LMN = 167°

5 0
3 years ago
Kory and two of his friends are going to rent a 3 bedroom apartment for $960 a month. The security deposit is $400 and the pet d
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Answer:$773.33

Step-by-step explanation:

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3 years ago
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