PLS MY PARENTS ARE COMING

What number should be added to both sides of the equation to complete this square? x^2-10x=7

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

It took alice 5 5/6 hours to drive to her grandparents' house for . on the way home, she ran into traffic and it took her 7 3/8 hours. how much longer did the return trip take? write your answer as a proper fraction or mixed number in simplest form. the trip home took __hours longer. ?