4a) The vertices of a triangle are P(-7, -4) Q(-7, -8) and R(3, -3). What are the coordinates of P' after a reflection over y=x? Please type your answer as
coordinates (x, y) with no spaces.

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

Miranda is braiding her hair.then she will attach beads to the braid.she wants 1_3 of the beads to be red.if the greatest number of beads that will fit on the braid is 12,what other fractions could represent the part of the beads that are red?

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics