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Maslowich
3 years ago
8

If you know that a 30% increase in a quanity is 50, how can you find the original quanity?​

Mathematics
1 answer:
In-s [12.5K]3 years ago
8 0
It should be 15% I think I’m right
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Find the distance between<br> -2-3i<br> and<br> 3+9i
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Step-by-step explanation:

We can consider the complex number x+iy as point with coordinates (x,y), where x is real part of the complex number and y is an imaginary part of the complex number.

The distance between two complex numbers is exactly tha distance between two points corresponding to each number.

z_1=-2-3i\Rightarrow A(-2,-3)\\ \\z_2=3+9i\Rightarrow B(3,9)

Now find the distance between A and B:

AB=\sqrt{(-2-3)^2+(-3-9)^2}=\sqrt{(-5)^2+(-12)^2}=\sqrt{25+144}=\sqrt{169}=13\ units

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