What is 3/8 + 7/8 on a number line?

In what organelle does photosynthesis take place?

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

(10. in the figure, a aabc is drawn tocircumscribe a circle of radius 3 cm ,such thatthe segments bd and dc are respectively oflength 6 cm and 9 cm. find the length ofsides ab and ac.