Patrick is constructing the circumscribed circle for △RST. Which construction could be his first step?

Galen sold tickets of his church’s carnival for a total of $2,820. children’s tickets cost $3 each and adult tickets cost $5 each. the number of children’s tickets sold was 30 more than 3 times the number of adult tickets slod. how many children’s ticket and how many adult tickets did he sell?

Car a and car b were in a race .the driver of car b claimed that his car was twice as fast as car a

In the diagram below,abc is congruent to dec what is the value of x