Answer:
so a circle it's 360° so if u divide 360÷1/4
12:15 does not belong, since that is a ratio of 4:5, whilst the others are all 3:4.
A = b = 12 cm
<span>Pythagorean theorem
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formula

<-- Answer
Solve for x over the real numbers:
-x^2 - 12 = -87
Add 12 to both sides:
-x^2 = -75
Multiply both sides by -1:
x^2 = 75
Take the square root of both sides:
Answer: x = 5 sqrt(3) or x = -5 sqrt(3) both Answers are correct