Ao incidir sobre determinado capital um acrescimo 15% e, em seguida, sobre o valor obtido um desconto tambem 15% é correto afirmar que o valor do capital volta ao valor original? justifique

Jim is standing beside a pool. He drops away from 4 feet above the surface of the water in the pool. The weight travels a total distance of 12 feet down before landing on the bottom of the pool.

One-ninth of all sales at a local Subway is for cash. If cash sales for the week were $690, what were Subways total sales? This one is not clear. I know i am missing something here.

A bicyclist rides the same number of miles every minute. The ratio table below shows the number of miles she rides during certain amounts of time. Biking Times and Distances Number of Minutes Number of Miles 10 2.5 16 4? 7.

Group the terms with variables on one side of the equal sign, solve and simplify. 5/8a + 6=3/4a

Greatest common factor for: 30a to the second power, 42a to the third power, 54a to the third power b

There are 52 white keys and 36 black keys on a standard piano. What is the probability that if a person did not look and hit the keyboard twice that he or she would first hit a white key and then hit a black key?

Problem Page A rug is in the shape of a square. It measures 14 feet on each side. What is its perimeter?

Some people advise that in very cold weather, you should keep the gas tank in your car more than half full. Irene 's car had 5.5 gallons in the 14 -gallon tank on the coldest day of the year. Irene filled the tank with gas that cost $3.70 per gallon.

If N = 34, what is 7 - N?

A rectangle is divided into same size squares one row covers 1/8 of the whole rectangle there are 3 squares in each row how many squares are in a whole triangle