A) The sum of the ages of a father and his son is 42 years. Six years ago, the father 5 times as old as his son was. Find their present ages.
in algebra of equation in mathematic

The functions q and r are defined as follows. q(x)= -2x+2 r(x)= x^2 - 1 find the value of r(q(

17 in long 1.3 ft wide and 8in high what is the volume

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )