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babunello [35]
3 years ago
14

Help me. its confusing

Mathematics
1 answer:
kvasek [131]3 years ago
4 0
Add 300 and then will still be confused
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Write the explicit formula that represents the geometric sequence -2,8,-32,128.
Dmitriy789 [7]

Answer:

a_{n} = - 2(-4)^{n-1}

Step-by-step explanation:

The n th term ( explicit formula ) for a geometric sequence is

a_{n} = a(r)^{n-1}

where a is the first term and r the common ratio

Here a = - 2 and r = 8 ÷ - 2 = - 4, thus

a_{n} = - 2(-4)^{n-1}

5 0
3 years ago
Mia said that 2 - 3a = 11 and 3a -2 +1 have the same solution. Is she correct? Explain.
Sedaia [141]
2-3a=11
Minus 2 from both sides
-3a=9
a=-3
3a-3=1
Plus 3 to both sides
3a=4
a=4/3
No
5 0
3 years ago
Which equation does the graph of the systems of equations solve?
vredina [299]
Y = 2x + 3
y = -8x + 3
7 0
3 years ago
cody is reading a 520-page book this summer. he read 1\5 of the pages on sunday. he read 1\2 of the pages on tuesday. he read th
kirill115 [55]
Assume that on Tuesday he read 1/2 pages out of 520 pages not what's left of the book minus 1/5 of the pages that he read on Sunday.
Cody read 260 pages on Saturday.
4 0
3 years ago
A bank account has a beginning balance of $560.00. After 6 months, the balance in the account has increased to $572.60. What int
trasher [3.6K]

Answer:

D. 4.5%.

Step-by-step explanation:

Interest earned in 6 months = 572.6 - 560 = $12.60.

As a percentage this is (12.60 * 100) / 560

= $ 2.25%.

So the annual interest is 2 * 2.25

= 4.5%.

4 0
3 years ago
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