Can you'll pleas me on 12 13 14 15

9/10 divide by -3/15 as a mixed number

What is the value of the product (3-2i)(3+2i)?

When a 757 passenger jet begins its descent to the ronald reagan national airport in washington, d. c., it is 3900 feet from the ground. its angle of descent is 6 degrees. how far must the plane fly to reach the run way? a. 37,106 ft b. 37,310.4 ft c. 23,456.6 ft d 2,492.7 ft