3 years ago

Plsss help 6th grade math

Mathematics

1 answer:

nignag [31]3 years ago

4 0

Answer:

The correct answer is C! :)

Step-by-step explanation:

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svetoff [14.1K]

Answer:

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Step-by-step explanation:

Because x does not equal 7 as well, brackets won't be used here.

Because x can be any number greater than 7, this means the domain includes positive ∞.

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olya-2409 [2.1K]

Answer:

$x=2$ and $y=-1$

Step-by-step explanation:

If two equations are given, we can solve one of the equation in terms of single variable and put it in the other equation which will further give the value of x and y.

For the given equations:

$8x-5y=21$ Equation:1

$2x+9y=-5$ Equation:2

Solving equation multiply equation 2 with 4 on both the sides

$8x+36y=-20$ Equation 3

Subtracting Equation:3 from Equation:1

$8x-5y-(8x+36y)=21-(-20)\\8x-5y-8x-36y=21+20\\-41y=41\\y=-1$

Putting value of 'y' in Equation:2 which will give the value of x

$2x+9y=-5\\2x+9(-1)=-5\\2x-9=-5\\2x=4\\x=2$

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Answer:

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Answer: b

Step-by-step explanation:

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