In a classroom of 28 there are 12 boys and 16 girls. What fraction of the class are boys?

Will a regular octagon will tessellate alone?

pharmacist has an 18% alcohol solution and a 40% alcohol solution. How much of each should he mix together to make 10 liters of a 20% alcohol solution?

Evaluate the following. 4x4+6divided by2-5

Find the value of the expression c : b : 3 + 8 for b = 2 and c = 12.

Which equation has a solution of (2/3) for n? * A. 15n = 10 B. 16n = 24 C. 1 + n = 3 D. n - 1 = 1/3

At a local river there were 48 alligators laying on the riverbank. if 7/8 of the alligators were sleeping how many were awake

Approximately 4% of silicon wafers produced by a manufacturer have fewer than two large flaws. If Y, the number of flaws per wafer, has a Poisson distribution, what proportion of wafer have more than five large flaws?

2x + 3 equals negative 7

If revenue for the week I'd 2000, and labor costs consists of two workers earning 8$ per hour who work 40 hours each, what is labor cost as a percentage of revenue

Stefano paid $7 per hour to rent a bicycle. Jordana paid $9 per hour to rent a bicycle. If they both rent bicycles for 3 hours, how much more will Jordana pay?