Prove the divisibility of the following numbers: 45^10·5^40 by 25^20
It should be answered as __*25^20
Thank you!

2x+3y=12 x-y=6 solve the following system equations

You’re repairing a large rectangular aquarium. the final step is to cover the glass with a protective film. the front and back of the aquarium measure 4 meters by 2 meters, and the sides of the aquarium measure 3 meters by 2 meters. how many square meters of protective film do you need? ( )

What is not true about kl and mn? what is mn? (show your work)