9. To adopt the practice that the denominator of a fraction be positive (numerator may be negative or zero),
the set of rational numbers may be built by Q = { me Zane N). Consider each rule from Q to Z.
Use fractions to verify the underlined statement (show by example).
a. Let r(m/n) = mn. Then r is not well-defined: the relation r defined by (m/n, mn) er is not a fetn;
that is, the relation r on Q x Z via xry (y=mn VmeZAneNo: x=m/n) is not a function.

answer: 20

step-by-step explanation: subtract the minimum date value from the maximum data value to find the date range. in this casem the date range is 42 - 22 = 20

hope this ! : ) ~zane

well what did you do it matters what you did : )

step-by-step explanation:

b) k’(6, 4); l’(3, 3)

step-by-step explanation:

a 270° clockwise rotation maps every point (x, y) to (y, -x). (it negates the x-coordinate and then switches it and the y-coordinate.)

this means the endpoints of the side congruent to kl, k' and l', would be mapped as:

k'(-4, 6)→(6, 4)

l'(-3, 3)→(3, 3)

38.6°

step-by-step explanation:

resultant is 10 pound

smaller force = 8 pound

angle formed = tan⁻¹(

                        =tan⁻¹(

                          =tan⁻¹(0.8)

                        =38.6°