Which expression is equivalent to (5^-2) (5^-1)

-1/125
-1/5
1/125
1/5

Find the required measurements of the following trapezoids. a = 8 cm b = 16 cm h = 10 cm

Aswim teacher sells lesson packages. the best deal has the highest ratio of lessons to total cost. swim lesson packagesnumber of lessons total cost$10$4010 1 $8015$80which package is the best deal? l lesson for $105 lessons for $4010 lessons for $8015 lessons for $80mark this and returnsave and exit

Tom can paint the fence in 12 hours, but if he works together with a friend they can finish the job in 8 hours. how long would it take for his friend to paint this fence alone?