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2 years ago

What is the answer for 5x+2=2x-10

Mathematics

2 answers:

jarptica [38.1K]2 years ago

6 0

5x+2=2x-10

The lesser number with "x" is 2x.

Subtract 2x from both the "x"'s:

3x+2=-10

Take 2 away from both sides:

3x=-12

Divide both sides by 3:

x=-4

Hope this helps! :D

Lady bird [3.3K]2 years ago

4 0

5x+2=2x-10

3x=-12

x=-4

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Answer:

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Step-by-step explanation:

Create a system of equations where a is the number of adult tickets sold and c is the number of child tickets sold:

8a + 5c = 744

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Solve by substitution by substituting the second equation into the first one:

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Answer:

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Step-by-step explanation:

The sum you are trying to understand is this.

$\sum\limits_{n=0}^{\infty} \frac{2}{3^n}\frac{(-1)^n}{5^n}$

Remember that in general when you have a geometric series

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Therefore here we have

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