Is the line through points p(-3,-2) and q(2,3) perpendicular to the line through points r(10,1) and s(15,-6)?

This week, conrad will work 1 3/4 times longer than last week. giovanni will work 1 1/3 times longer than last week. sally will work 2/3 the number of hours she worked last week. match each employee's name to the number of hours he or she will work this week

Which of the following statement about pascal's triangle are true?

Julia bought 7 hats a week later half of all her hats were destroyed in a fire. there are now only 12 hats left with how many did she start