6. When Chad stands on a chair, he is 11 feet tall. If the chair is 4 feet tall, write and solve an addition equation to find Chad's height.

Arunning track in the shape of an oval is shown. the ends of the track form semicircles. a running track is shown. the left and right edges of the track are identical curves. the top and bottom edges of the track are straight lines. the track has width 56 m and length of one straight edge 130 m. what is the perimeter of the inside of the track? (π = 3.14) 260.00 m 347.92 m 372.00 m 435.84 m

Geometry in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.

Which value of m will create a system of parallel lines with no solution? y = mx - 6 8x - 4y = 12