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Makovka662 [10]
3 years ago
10

Evaluate each arithmetic series described (find the sum).

Mathematics
2 answers:
True [87]3 years ago
4 0

Answer:

120

Step-by-step explanation:

Alborosie3 years ago
3 0

Answer:

120

Step-by-step explanation:

first figure out parenthesis

replace n for 1 then you get 13-5, and you get 8.

then you just have to multiply 15 x 8.

then you get 120

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(7.5, 3)

Step-by-step explanation:

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Midpoint:

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4 0
3 years ago
The table below shows four systems of equations:
Ede4ka [16]
To determine which system of equations would have the same solution, we evaluate each system of equations.

System 1 4x − 5y = 2, 3x − y = 8
x = 38/11
y = 26/11

<span>System 2 4x − 5y = 2, 3x − 2y = 1
x = 1/7
y = -2/7

System 3 4x − 5y = 2, 3x − 8y = 4
x = -4/17
y = -10/17

System 4 4x − 5y = 2, 10x − 9y = 4
x = 1/7
y = -2/7

</span><span>
Therefore, the correct answer is option 3. </span><span>System 2 and system 4 are equal, because the second equation in system 4 is obtained by adding the first equation in system 2 to two times the second equation in system 2.

     4x− 5y = 2 2( 3x − 2y = 1)
-----------------------    10x - 9y = 4</span>
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3 years ago
What are the soulutions of x^2+6x-6=10?
tia_tia [17]

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Step-by-step explanation:

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