5(+6)=50 is the answer 4 ,30 ,20 ,or 5

What is the measure of angle tvu shown in the diagram below

Koji is installing a rectangular window in an office building. the window is 823 feet wide and 534 feet high. the formula for the area of a rectangle is a=bh. what is the area of the window? enter your answer as a mixed number in simplest form in the box. $$ ft2

What is 100,000 times 1/100,000, using the standard method of multiplication? write the answer as 10 to a power.