Iam thinking of a number. i subtract 10 then divide by 2 and i now have 19. what was my original number? (hint: start with the number at the end, 19, and work in "reverse". in other words, 19 × 2 + 10.)

Find the volume of the solid obtained by rotating the region enclosed by the curves y=1x and y=7^-x about the x-axis. (use symbolic notation and fractions where needed.) volume =

What is the solution to the system of equation graphed belowa.(0,-4)b.(2,5),1),-3)

Answer this two poles, ab and ed, are fixed to the ground with the of ropes ac and ec, as shown: two right triangles abc and edc have a common vertex c. angle abc and edc are right angles. ab is labeled 13 feet, ac is labeled 15 feet, ec is labeled 10 feet, and ed is labeled 4 feet.what is the approximate distance, in feet, between the two poles? 11.14 feet16.65 feet14.35 feet15.59 feet