Davian is traveling at a constant speed of 85 kilometres per hour. If he is half way through his 510 kilometre trip, how much longer will the trip take? a.1.5 hours
b.3 hours
c.425 hours
d.12 hours
e.5 hours

The ratio of two numbers is 5 to 4. the sum of the numbers is 99. what number is the greater of the two numbers?

50 ! pls ! 12.  building codes regulate the steepness of stairs. homes must have steps that are at least 13 inches wide for each 8 inches that they rise.

a. discuss how to find the slope of the stairs.
b. describe how changing the width or height affects the steepness of the stairs.

Which system of linear inequalities is represented by the graph? + l tv x-3y > 6 and y > 2x o x + 3y > 6 and y o x-3y > 6 and y> 2x o x + 3y > 6 and y > 2x + 4 la +