Two boats start their journey from the same point a and travel along directions ac and ad, as shown below:

what is the distance, cd, between the boats?

Ametalworker has a metal alloy that is 30? % copper and another alloy that is 55? % copper. how many kilograms of each alloy should the metalworker combine to create 90 kg of a 50? % copper? alloy?

Anyone know? is appreciated! will mark brainliest if correct!

Find the zero function by factoring (try to show work) h(x)=-x^2-6x-9