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kkurt [141]
3 years ago
10

3x+4y=-23 2y-x=-19 What is the solution (x,y) to the systems of equations above?

Mathematics
1 answer:
Shkiper50 [21]3 years ago
3 0
If we multiply the bottom equation by 2 and move x to the right, it becomes:

4y = 2x-38

Now we can substitute it for the 4y in the top equation:

3x + (2x-38) = -23 => 5x = -23+38 => 5x = 15 => x=3

Then 4y = 2*3-38 => y = -8

So the solution is (3,-8)
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Find the perimeter of the window. Round your answer to the nearest tenth.
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Step-by-step explanation:

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For one toss of a certain coin, the probability that the outcome is heads is 0.6. If this coin is tossed 5 times, which of the f
pishuonlain [190]

Answer:

The probability is 0.33696

Step-by-step explanation:

The probability that the outcome will be heads x times is calculated using the following equation:

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Then, the probability that the outcome will be heads at least 4 times is calculated as:

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Where P(4) is:

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And P(5) is:

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