Guillermo is standing 112.5 m from an office building. The top of the building is at an angle of elevation of 39⁰. If Guillermo’s eyes are 1.6 m off the ground, what is the height of the building to the nearest tenth of a metre?

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry

Atotal of 766 tickets were sold for the school play. they were either adult tickets or student tickets. there were 66 more student tickets sold than adult tickets. how many adult tickets were sold?