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4 years ago

5

How to solve this using the elimination method

1 answer:

marishachu [46]4 years ago

7 0

10x+2y=18
10x-7y=-18
Multiply the second one by -1
-10x+7y=18
Then add the two equations
10x+2y=18
+-10x+7y=18
----------------
9y=36
y=4

Plug that back into one of the equations above and solve for x
10x+2y=18
10x+2(4)=18
10x+8=18
10x=10
x=1

so your answer is x=1 and y=4 or (1,4)

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2 (Picture) CONVERGENT AND DIVERGENT SERIES PLEASE HELP!!

Ivanshal [37]

Answer:

This series is divergent

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Step-by-step explanation:

we are given a series

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Numerator:

3, 4, 5,...

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so, nth term will be

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so, we can find it's nth term as

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we can use divergent test

$\lim_{n \to \infty} c_n=\lim_{n \to \infty} \frac{n+3}{n+4}$

we can divide top and bottom by n

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$\lim_{n \to \infty} c_n= \lim_{n \to \infty} \frac{1+3/n}{1+4/n}$

now, we can plug n=inf

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4 years ago

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Archy [21]

Answer:

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3 years ago

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Answer:

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Step-by-step explanation:

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Harlamova29_29 [7]

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Step-by-step explanation:

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irga5000 [103]

Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers