Icant figure out how the answer book got -/2 | 2 (negative root two over two) for one of the 6 answers. where did the bottom 2 come from?

One of every 20 customers reports poor customer service on your company’s customer satisfaction survey. you have just created a new process that should cut the number of poor customer service complaints in half. what percentage of customers would you expect to report poor service after this process is implemented? 1.) 5% 2.) 10% 3.) 2% 4.) 2.5%

To prove that angle def = angle dgf by sas, what additional information is needed? def congruent to dgf dfe congruent to dfg de congruent to dg dg congruent to gf

20 points + brainliest answer + my mom’s chocolate chip cookie ! subtract.