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2 years ago

Solve for x: -19= - 4x+1 - 6x

Mathematics

2 answers:

irinina [24]2 years ago

8 0

Answer: x = 19/189

Step-by-step explanation:

Add the same term to both sides of the equation

Simplify

Multiply all terms by the same value to eliminate fraction denominators

Simplify

Divide both sides of the equation by the same term

Simplify

Paul [167]2 years ago

3 0

X=−1/2 and that breaks down into 1/10.

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2 years ago

How do you solve 21r < 7?

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An exterior angle of a regular convex polygon is 40°. What is the number of sides of the polygon?

seraphim [82]

Answer:

option B

Step-by-step explanation:

Sum of interior angles of a polygon with n sides:

$= (n - 2 )\times 180$

$Therefore, Each \ interior \ angle = (\frac{n - 2}{n} )\times 180$

$Sum \ of \ one \ of \ the \ interior \ angle \ with \ its \ exterior \ angle \ is \ 180^\circ$

$[ \ because \ straight \ line \ angle = 180^\circ \ ]$

That is ,

$Exterior \ angle + Interior \ angle = 180^\circ\\\\40^ \circ + (\frac{n-2}{n}) \times 180 = 180^\circ\\\\40 n + 180n - 360 = 180n\\\\40n = 180n - 180n + 360 \\\\40n = 360 \\\\n = 9$

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2 years ago

I really need help I’m very confused

Vaselesa [24]

Answer:

10: -11n^5

12: 6k^2 -6k+7

Step-by-step explanation:

Ok so what your gonna do is add or subtract the ones with the same exponent.

so -15+4= -11 since they are both n^5 you can add them so your answer is:

-11n^2

now you have 8k^2-k-5k+7-2k. so you are gonna rearrange them so the same exponents are together.(keep the sign in front in front, if no sign it is positive)

8k^2-2k^2-5k-k+7

add like exponents

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3 years ago

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Marysya12 [62]

Answer:

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Step-by-step explanation:

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