If ac = 12, dc = 7, de = 5, and the perimeter of δabc is 30, what is the perimeter of δdec? a. 12.5 b. 14.0 c. 14.8 d. 17.5

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

In the 30-60-90 triangle below side s has a length of and side r has a length

What is the answer to this question? i'm a bit stumped. also how do i do it? 5(x - 4) = 2(x + 5)