3 years ago

Factor completely 2x^2 − 18.

Mathematics

1 answer:

777dan777 [17]3 years ago

3 0

Answer:

$2(x+3)(x-3)$

Step-by-step explanation:

The first step is to factor out a 2 as it is a common factor of both terms

$2(x^2-9)\\$

That is a difference of squares so

$2(x+3)(x-3)$

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A line is parallel to the line y=2/3x-1 and goes through the point (-3,1). What is the equation of the line?

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Answer: y= 2/3x+3

Step-by-step explanation: Hope this helps.

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3 years ago

Solve the equation X/-2=5

Ipatiy [6.2K]

Answer:

$\boxed {x = -10}$

Step-by-step explanation:

Solve for the value of $x$ :

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4 years ago

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4 years ago

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Is 21.192 a rational or irrational

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Rational number is something that does not have a decimal number going to infinity or something that can be written as a fraction

21.192 can be written as 21 192/1000 so yes its rational

i.e. √2 goes on forever and cannot be written as a fraction. so no it is not rational. it is irrational just like π.

Hope this helps :P

6 0

4 years ago

A plot of land is in the shape of a triangle. If one side is x meters, a second side is (5x - 2) meters and a third side is (7x-

tatuchka [14]

Hey there! I'm happy to help!

The perimeter is the distance around a shape. Let's add up the lengths of our sides to ind it.

x+5x-2+7x-3

We combine all of the x values.

x+5x+7x=13x

And all of the constants.

-2-3=-5

Therefore, the perimeter is 13x-5.

Have a wonderful day! :D

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3 years ago