It takes 81 pounds of seed to completely plant a 10 -acre field. how many acres can be planted per pound of seed?
at davidson's bike rentals, it costs $10 to rent a bike for 3 hours. how many dollars does it cost per hour of bike use?

Given the expression (7 ? 4i) ? (2 + 6i), perform the indicated operation and write the answer in the form a + bi.

Find the measure of angle y. round your answer to the nearest hundredth. ( type the numerical answer only) a right triangle is shown with one leg measuring 5 and another leg measuring 14. an angle across from the leg measuring 5 is marked y degrees. numerical answers expected!

Which expression gives the exact value of x?