If you have the circumference of a circle. How do you find the radius?
1 answer:
The formula for finding c...” No, you would divide it. The formula for finding circumference is 2 x pi x r, where r is the radius. 2 x r = d, where d is diameter.
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Step-by-step explanation:
delta math said it
Answer:
-6x² - 6 = -7x - 9 -6x² + 7x - 6 + 9 = 0 -6x² + 7x + 3 = 0 6x² - 7x - 3 = 0 <u>Discriminant:</u>
D = (-7)² - 4*6*(-3) = 49 + 72 = 121 <u>Since D > 0, there are 2 real solutions:</u>
x = (- (-7) ±√121 )/12 x = (7 ± 11)/12 x = 1.5, x = -1/3
Equation is (x+2)^2 - x^2 = 7676
