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2 years ago

Could you explain how to solve this problem? 10n = 40

Mathematics

2 answers:

kondor19780726 [428]2 years ago

8 0

Answer:

n=4

Step-by-step explanation:

n is 4 because 10(4)=40 the n represents a number and because there is nothing in between we know to multiply them, because we know that do the opposite of the question which is 40/10=4 meaning that n=4

irina1246 [14]2 years ago

7 0

Since were trying to solve for n, you have to isolate it so you would divide both sides by 10, and that will give you n = 4

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3 years ago

Read 2 more answers

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Answer:

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Step-by-step explanation:

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1 year ago

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Answer:

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Step-by-step explanation:

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3 years ago

What are the real and complex solutions of the polynomial equation X^3-216=0

vazorg [7]

Answer:

$6,\ -3+3\sqrt{3}i,\ -3-3\sqrt{3}i$

Step-by-step explanation:

Factor the equation $x^3-216=0$ using formula for difference of the cubes:

$x^3-216=(x-6)(x^2+6x+36),$

then

$x-6=0\ or\ x^2+6x+36=0.$

1. The equation $x-6=0$ has real solution $x=6.$

2. The equation $x^2+6x+36=0$ has negative discriminant $D=6^2-4\cdot 36=36-144=-108,$ then it has two complex solutions

$x_{1,2}=\dfrac{-6\pm 6\sqrt{3}i}{2}=-3\pm3\sqrt{3}i.$

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3 years ago