The picture gives information about a car traveling at a constant speed. which choice shows the car's speed between checkpoints a and b, expressed as a unit rate?

Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.

Multiply and simplify. 2x2y3z2 · 4xy4x2 how to do?

Two trains leave stations 546 miles apart at the same time and travel toward each other. one train travels at 95 miles per hour while the other travels at 115 miles per hour l. how long will it take for the two trains to meet