How do you find the citcumfrence of a circle

(05.08a)triangle abc is transformed to similar triangle a′b′c′ below: a coordinate plane is shown. triangle abc has vertices a at 2 comma 6, b at 2 comma 4, and c at 4 comma 4. triangle a prime b prime c prime has vertices a prime at 1 comma 3, b prime at 1 comma 2, and c prime at 2 comma 2. what is the scale factor of dilation? 1 over 2 1 over 3 1 over 4 1 over 5

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?

Lines a and b are parallel. what is the value of x? -5 -10 -35 -55