With ! lots of points!

given cs = 3, sb = 6, cr = 4, and ra = x. what must the value of x be in order to prove sr || ba? justify your answer. picture belowvvv

Clara schumann is buying bagels for her coworkers, she buys a dozen bagels priced at $5.49 a dozen. the bakery's cost for making the bagels is $2.25 per dozen. what is the markup rate based on selling price on a dozen bagels?

Find the midpoint m of z1=(8+5i) and z2=(12+3i)

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