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Kay [80]
3 years ago
11

Solve for x and y simultaneously:(3x-9y)²+(x+15)²=0​

Mathematics
1 answer:
Ymorist [56]3 years ago
4 0

Answer:

x = \frac{3(3iy+9y-5+15i)}{10}

y= -\frac{xi}{9} - \frac{5i}{3} + \frac{x}{3}

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Y is inversely proportional to x, when Y = 7, x = 4.
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Answer:

The given statement  Y = 7, x = 4 is False.

Step-by-step explanation:

We are given:

Y is inversely proportional to x, when Y = 7, x = 4.

We need to tell if the statement is True or False: the constant of proportionality, k, is 20.

Y is inversely proportional to x

We can write it as: y\:\alpha \:\frac{1}{x}\\y=\frac{k}{x}

Now, we need to check when Y=7, x = 4 is true or false

We are given k = 20

Now, I can find value of y, by putting values of k and x in the equation:

y=\frac{k}{x}\\y=\frac{20}{4}\\y=5

When we put x = 4, and k =20, we get Y=5 and not Y=7

So, The given statement  Y = 7, x = 4 is False.

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