Answer: n=4 y=3
Step-by-step explanation:
3n - y = 9
2n + y = 11
n=4
3(4) - y = 9
12 - y = 9
y=3
A regular 12-sided polygon rotated 30 degrees is the minimum degrees so that it is rotated on itself.
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Any number<span> times itself is a positive </span>number<span> (or zero), so </span>you can't ever get to anegative number<span> by squaring. Since </span>square roots<span> undo squaring, </span>negative numbers can<span>'t have </span>square roots<span>. The </span>square root<span> of a </span>number<span> y is defined to be the value x such that x 2 = y . However, for any real </span>number<span> x , x 2 ≥ 0 .
I hope this helps.</span>
The area of the rectangular pink border is of 400 cm².
<h3>What is the area of a rectangle?</h3>
The area of a rectangle of dimensions l and w is given by the multiplication of the dimensions, as follows:
A = lw.
Hence, the total area is given by:
A = 30 x 20 = 600 cm².
The area of the white region is given by:
A = (30 - 2 x 5) x (20 - 2 x 5) = 20 x 100 = 200 cm².
Hence the area of the pink border is:
600 cm² - 200 cm² = 400 cm².
More can be learned about the area of a rectangle at brainly.com/question/25292087
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