Help me. Please.pls help find the length of BC ASAP pleaaase. I've tried but I'm not getting it

In triangle opq right angled at p op=7cm,oq-pq=1 determine the values of sinq and cosq

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?

Tod does not have any cookies. david gives jeff 8 cookies. then he splits half of the cookies he has left with tod. david let’s c represent the number of cookies that he starts with. he finds the number of cookies that tod has is 1/2 the difference of c and 8. write an expression to represent the number of cookies that tod has.