Laura paddles n her canoe at a speed of 6 mph for 6 miles. she then hops on her windsurfer and sails for 12 miles at a speed of 6 mph. for how long does laura travel? ?

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?