A length is measured as 21cm correct to 2 significant figures a) what is the lower bound for the length?
b) what is the upper bound for the length?

Which of the following equations is of the parabola whose vertex is at (4, 3), axis of symmetry parallel to the y-axis and focus at (4, -3)? a.) y+3=1/24 (x+4)^2 b.)y-3=-1/24 (x-4)^2 c.)x-4=-1/24 (y-3)^2

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

Which of these tools or constructions is used to inscribe a hexagon inside a circle?