Boris started cleaning at 4: 18 pm and finished at 5: 43 pm. how long did it take him? give your answer in minutes. write it in hours and minutes

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

The following hormone had their receptors in the cell membrane except a-insulin b-tsh c-gh d- cortisol

Find the vertex for the parabola given by the function ƒ(x) = −3x2 − 6x.