3 years ago

2x − y = 11 x + 3y = −5 what is the x value

Mathematics

1 answer:

nekit [7.7K]3 years ago

7 0

your answer is

{x,y}={4,-3}

btw can i have brainliest

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Students in Mr. Eaton’s class must choose a person from a list of 30 people and then write an essay about that person. The list

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Answer:

3/10 or 30%

Step-by-step explanation:

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2 years ago

a fan is marked up 40% on the original price. The original was $20. What is the new price of the fan before sales tax?

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100/40×20.
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3 years ago

What is the slope of a line perpendicular to the line whose equation is 6x+4y=-56

alex41 [277]

Answer:

First, put the equation of the line given into slope-intercept form by solving for y. You get y = -2x +5, so the slope is –2. Perpendicular lines have opposite-reciprocal slopes, so the slope of the line we want to find is 1/2. Plugging in the point given into the equation y = 1/2x + b and solving for b, we get b = 6.Step-by-step explanation:

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2 years ago

Is (x+7) a factor of f(x) x3-3x2+ 2x-8?

Snowcat [4.5K]

Answer:

(x+7) is not a factor

Step-by-step explanation:

we know that

If (x+7) is a factor of f(x)

then

For $x=-7, f(-7)=0$

Verify

we have

$f(x)=x^{3}-3x^{2} +2x-8$

Substitute x=-7

$f(-7)=(-7)^{3}-3(-7)^{2} +2(-7)-8$

$f(-7)=-343-147 -14-8$

$f(-7)=--512$

$-512\neq 0$

therefore

(x+7) is not a factor

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3 years ago

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The coordinate of C' is (6, -3) which is three times of the coordinate of C(2, -1)

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3 years ago

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