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8090 [49]
2 years ago
5

Solve using the substitution method 4x-2y=8 y=1/2x +2

Mathematics
1 answer:
bekas [8.4K]2 years ago
7 0

Hello there! the answer would be x = 3/4.

You are given the two equations: 4x - 2y = 8 and y = 1/2x + 2. You are asked to solve via substitution. To do this, substitute the value of y in the second given equation into the first given equation, and solve using PEMDAS.

4x - 2(1/2x + 2) = 8 - Start by distributing 2 into (1/2x + 2).

4x - 1x + 4 = 8 - Combine like terms.

3x + 4 = 8 - Subtract 4 from both sides.

3x = 4 - divide both sides by 3.

x = 3/4. This is your final answer.

I hope this was helpful, have a great day! :)

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Answer:

Step-by-step explanation:

It is a linear equation and the gradient equation is given as:

y=mx+c

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-3x+2y=1

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Dividing all through by 2

y=1/2 + 3x/2

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2 years ago
The train travels 558 miles in 3 hours. At this rate, how far does the train travel?
tresset_1 [31]

Answer:

186 mph

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vazorg [7]

Answer:

(f.g)(x)=4x^3+4x^2

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For this sort of problem, you need to be familiar with prefixes.

So:

megabyte = 1 *10^6 bytes

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and a regular byte would just be 1

Now, you will need to do a conversion:

1megabyte*\frac{1*10^6bytes}{1megabyte}*\frac{1*10^{-3}kilobyte}{1byte}

I'm going to explain this just in case, but we convert megabytes to regular bytes in the first half by using the information I gave you above. (In one megabyte, there are 1*10^6 bytes!)

In the second fraction thought, remember one kilobyte is 1*10^3 bytes. However, you usually only see one of each thing on the bottom of fractions, so you need to add a negative sign to the 3. (technically you could just do \frac{1kilobyte}{1*10^3bytes}, but I think it is more correct to do write it out how I did).

*** They do equal the same thing though! Do whichever way is easier for you!

Now, your answer should be:

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Hope this helped!

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