Add the following
rational numbers:
-12 +-3 +-2

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

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Can someone me with these two circle theorem questions asap?