Which of the following demonstrates using the

Mathematics

1 answer:

shusha [124]3 years ago

5 0

I think the answer might be A and D

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3x\4=2y+6xy. what is "x" equal too? what is "y" equal too?

andreyandreev [35.5K]

the answer is
x=8y/3(1-8y)

y=3x/8(1+3x)

hope this helped l used cymath to solve this problem.
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3 years ago

400 divided by 10 to the third power

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$400/10^3 = 4*10^2/10^3 = 4* \frac{10^2}{10^3}=4* \frac{1}{10} = \frac{4}{10} =0.4$

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3 years ago

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3 years ago

Enny White is shopping for CDs. She decides to purchase 3 movie soundtracks. The music store has 7 different movie soundtracks i

Gala2k [10]

Answer:

35 different selections of soundtracks are possible

Step-by-step explanation:

Total number of soundtracks available at the store = 7

Enny decides to purchase 3 movie soundtracks.

So, in this problem we have to find in how many ways can Enny chose 3 soundtracks out of 7. The order in which the soundtracks are chosen does not matter e.g soundtracks A,B and C are the same as soundtracks B,C and A.

In an arrangement when the order does not matter, we use combinations to find the total possible number of arrangements or selections.

So, for this problem choosing 3 soundtracks out of 7 means forming combinations from 7 objects taken 3 at a time. This can be represented mathematically as:

$^{7}C_{3}$