An aluminum cube measures 8 cm on each edge. Aluminum weighs 2.7 grams
per cubic centimeter. How much does
the cube weigh?
Please help fast this is due in the morning

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. what distance from city a is the point where the truck and the car will meet?

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*