Keiko walks 5/10 kilometer from school to the park. then she walks 19/100 kilometer from the park to her home. how far does keiko walk?

Can someone check my answer? you : )

This week, conrad will work 1 3/4 times longer than last week. giovanni will work 1 1/3 times longer than last week. sally will work 2/3 the number of hours she worked last week. match each employee's name to the number of hours he or she will work this week

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?