Tom packed 12 identical textbooks and 8 identical notebooks ina box and found it's weight as 42 ib. after he put 1 more textbook and 10 more notebooks in the same box, the total mass was 59.5 ib. write a system of equations to determine the mass m in pounds, of one textbook and one notebook. solve the system of equations and find the mass of each.

What is the value of the expression i 0 × i 1 × i 2 × i 3 × i 4? 1 –1 i –i

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

One file clerk can file 10 folders per minute. a second file clerk can file 11 folders per minute. how many minutes would the two clerks together take to file 672 folders?