A triangle has vertices P (4, 1), Q (4, 5) and R (7, 5). What is the area of ΔPQR? (Area=12 base×height)

Tickets to a science exposition cost $5.75 each for studentd and $7.00 for adults.how many students and adults went if the ticket charge was $42.75

Find the missing dimension! need asap! tiny square is a =3025 in ²

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?