26. let s be the set of positive integers defined by to 913 basis step: 1e s recursive step: if n e s, then 3n+2 e s and n2 e s. a) show that if n e s, thenn = 1 (mod 4). b) show that there exists an integer m 1 (mod 4) that does not belong to s

In which form is the following function written? y = - 2(x – 3)(x + 5)

The length of a shadow of the building is 36m. the length of the pole, which is perpendicular to the ground, is 1.9m. the length of the pole's shadow is 1.52m. what is the height of the building?

Apiling for a high-rise building is pushed by two bulldozers at exactly the same time. one bulldozer exerts a force of 1250 pounds in a westerly direction. the other bulldozer pushes the piling with a force of 2650 pounds in a northerly direction. what is the direction of the resulting force upon the piling, to the nearest degree? a. 65 n of w b. 25 n of w c. 45 n of w d. 35 n of w