Televisions are advertised by the length of the diagonals a store is having a sale of 10% off of all television smaller than 40 inch and 20% off for 40inch or larger what is the the price for model b

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

Afactory buys 10% of its components from suppliers b and the rest from supplier c. it is known that 6% of the components it buys are faulty. of the components brought from suppliers a,9% are faulty and of the components bought from suppliers b, 3% are faulty. find the percentage of components bought from supplier c that are faulty.

Aconstruction worker needs to put a rectangular window in the side of a building he knows from measuring that the top and bottom of the window have a width of 8bfeet and the sides have a length of 15 feet he also measured one diagonal to be 17 feet what is the length of the other diagonal