Aline segment on a number line has its endpoints at -9 and 6 find the cooedinate of the midpoint of the segment

How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?

Technicians have installed a center pivot, circular irrigator for a farm that covers 25 acres. a.) how long is the irrigation boom (in feet) from the center pivot to its farthest extent? b.) if the irrigation boom makes 4 full revolutions in a day, how many miles does the end of the boom travel in 5 days?

Which statement best describes how to determine whether f(x) = x squared- x +8 is an even function ?