Find the missing angle measure

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

Areflection of shape i across the y-axis, followed by a , and then a translation left 6 units and down 4 units confirms congruence between shape i and shape ii. alternatively, a of shape ii about the origin, followed by a reflection across the y-axis, and then a translation right 4 units and up 6 units confirms congruence between shape ii and shape i.