What value of b will cause the system to have an infinite number of solutions y=6x-b -3x+1/2y=-3

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

Find the value of x for which abcd must be a parallelogram -9-6x x-30

Which of these triangle pairs can be mapped to each other using a single translation? cof hn