2 years ago

What is the answer to y+5<9

Mathematics

1 answer:

attashe74 [19]2 years ago

8 0

Answer:

I think the answer would be y<4

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Answer:

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Step-by-step explanation:

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18-12=6

6×2=12

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504 rounded to the nearest ten is?

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The sum of the interior angles of a polygon is 1080 degrees. How many sides does the polygon have?

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Answer:

Step-by-step explanation:

The formula for the number of degrees in the sum of the interior angles of an n-sided polygon is ...

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3 years ago

How would I solve this Rational Equation? Solve for all values of x.

Nesterboy [21]

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Answer:

x = 4

Step-by-step explanation:

I like to put these in the form f(x) = 0. We can do that by subtracting the right side. Common factors can be cancelled from numerator and denominator, provided they are not zero.

$\dfrac{7}{x+3}+\dfrac{3}{x-3}-\dfrac{x}{x-3}=0\\\\ \dfrac{7(x-3)+(x+3)(3-x)}{(x+3)(x-3)}=0\\\\\dfrac{(x-3)(4-x)}{(x-3)(x+3)}=0\\\\ \dfrac{4-x}{x+3}=0\qquad x\ne3\\\\x=4 \qquad\text{equate the numerator to zero, add $x$}$

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If you leave the numerator as (x-3)(4-x), then there are two values of x that make it zero. Because x=3 makes the equation "undefined", it cannot be considered to be a solution.

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