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lidiya [134]
3 years ago
9

I am really stuck please help meth

Mathematics
1 answer:
ohaa [14]3 years ago
7 0
A)-59
B)17
C)-72
D)6
E)-24
F)-25
G)25
H)-25
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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}

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3 years ago
Subtract the rational expression 1/x^2-x-6 - x/x+2.
Aleksandr [31]

Answer:

Step-by-step explanation:

x² - x -6 = x²  + 2x - 3x - 3*2

            =x(x + 2) - 3(x + 2)

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\frac{1}{x^{2}-x-6}+\frac{x}{x+2}=\frac{1}{(x +2 )(x - 3)}-\frac{x}{x + 2}\\

                      = \frac{1}{(x+2)(x-3)}-\frac{x(x-3)}{(x+2)(x-3)}\\\\=\frac{1-x(x-3)}{(x+2)(x-3)}\\\\=\frac{1-x^{2}+3x}{(x+2)(x-3)}\\\\

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2 years ago
PLEASE HELP ME 16 POINTS PLEASE HELP
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Answer:

3/1

Step-by-step explanation:

8 0
3 years ago
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Malcolm buys a 5/6 pound of black beans and a 3/4 pound bag of pinto beans. How many pounds of beans does Malcolm buy in all?​
artcher [175]

Answer:

1 7/12

Step-by-step explanation:

5/6+3/4=10/12+9/12 = 19/12 or 1 7/12

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