Which if the following is a factor for number 9 2(x+9) (x-9)

Mathematics

1 answer:

qwelly [4]3 years ago

5 0

From 2x^2 - 162,

factors would include 2(x+9)(x-9), in which x = 9,-9

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jeordie spreads out a recctangular picnic blanket with an area of 42 square feet. its width is 6 feet . which equation coud you

DochEvi [55]

Answer:

6x = 42

Step-by-step explanation:

The formula to find the area of a rectangle is $A = LxW$ . Since we have a value for the width, we simply need to find what to multiply to 6 to get 42.

Let x = length

6x = 42

We then divide both sides by 6 to find the value of x.

$\dfrac{6x}{6}=\dfrac{42}{6}$

$x=7$

So we know the length is 7.

To check the answer we substitute x with 7.

$6(7)=42$

$42=42$

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tiny-mole [99]

Answer:

Step-by-step explanation:

3 0

3 years ago

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FrozenT [24]

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4 0

3 years ago

Which system is equivalent to

sammy [17]

<u>Answer:</u>

D) 6x^2 - 8y^2 = 50

-6x^2 - 2y^2 = 11

<u>Step-by-step explanation:</u>

We are given the following two expressions:

$3x^2-4y^2=25$

and

$-6x^2-2y^2=11$

Now if we look at the option D) $6x^2 - 8y^2 = 50
$ and $-6x^2 - 2y^2 = 11$ , we can observe that the earlier part in the given expression is just a simplification of 6x^2 - 8y^2 = 50.