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3 years ago

Hey can someone please help me out with theses. And please show work. Thank you I really appreciate it.

Mathematics

1 answer:

Kamila [148]3 years ago

6 0

3x+9=5
3x=-4
x=-4/3

8z-1=11
8z=12
z=12/8
z=3/2

Hope u can do rest

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Answer:

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Step-by-step explanation:

Given

$a_1 = 8$

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$n = 14$

Required

The sum of the series

This is calculated using:

$S_n = \frac{n}{2}[a_1 + a_n]$

Substitute 14 for n

$S_{14} = \frac{14}{2}[a_1 + a_{14}]$

$S_{14} = 7[a_1 + a_{14}]$

Substitute values for a1 and a14

$S_{14} = 7[8 + 99]$

$S_{14} = 7*107$

$S_{14} = 749$

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3 years ago

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Answer:

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2 years ago

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Answer:

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Step-by-step explanation:

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