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3 years ago

Which fraction is equivalent to 6/-8? Please help! It will be appreciated

Mathematics

2 answers:

kifflom [539]3 years ago

8 0

Answer:

it would be the second one

Step-by-step explanation:

in a fraction it doesn't matter if the numerator has a - sign or the denominator does they are the same. for example: -2/3 is the same as 2/-3

Bas_tet [7]3 years ago

7 0

Answer:

it would be the last one

Step-by-step explanation:

hope it helps

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Suppose you have a light bulb that emits 50 watts of visible light. (Note: This is not the case for a standard 50-watt light bul

natali 33 [55]

Answer:

0.049168726 light-years

Step-by-step explanation:

The apparent brightness of a star is

$\bf B=\displaystyle\frac{L}{4\pi d^2}$

where

<em>L = luminosity of the star (related to the Sun) </em>

<em>d = distance in ly (light-years) </em>

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Hence the apparent brightness of Alpha Centauri A is

$\bf B=\displaystyle\frac{1.519}{4\pi (4.37)^2}=0.006329728$

According to the inverse square law for light intensity

$\bf \displaystyle\frac{I_1}{I_2}=\displaystyle\frac{d_2^2}{d_1^2}$

where

$\bf I_1=$ light intensity at distance $\bf d_1$

$\bf I_2=$ light intensity at distance $\bf d_2$

Let $\bf d_2$ be the distance we would have to place the 50-watt bulb, then replacing in the formula

$\bf \displaystyle\frac{0.006329728}{50}=\displaystyle\frac{d_2^2}{(4.37)^2}\Rightarrow\\\\\Rightarrow d_2^2=\displaystyle\frac{0.006329728*(4.37)^2}{50}\Rightarrow d_2^2=0.002417564\Rightarrow\\\\\Rightarrow d_2=\sqrt{0.002417564}=\boxed{0.049168726\;ly}$

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3 years ago

What is 41/21 as a decimal?????????

Naddika [18.5K]

Answer:

1.952380

Step-by-step explanation:

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3 years ago

Read 2 more answers