Circle C has a center at (9,−7) and a point is on the circle at A(6,−5). Which answer verifies whether the point P(12,−2) is on ⨀C?

Answers; a) 135 degree’s b) 30 degree’s c) 180 or 0 degree’s d) 90 degree’s

He mass of a single atom of carbon can be found by dividing the atomic mass (12.01 g) by 6.022 x 10^23. which is the mass of a single carbon atom, correctly written in scientific notation with the correct number of significant figures?

Which expression is equivalent to -5(3x - 6/7)