The half-life of a radioactive isotope is the time it takes for a quantity of the isotope to be reduced to half its initial mass. starting with 145 grams of a radioactive isotope, how much will be left after 5 half-lives?

14n+6p-8n=18p for n

Burj al Arab hotel, another one of the worlds tallest buildings, was finished in 1999. Located in dubai, it is 1053 feet high with 60 stories.

Which expression is equivalent to 4 + 6 (ac + 2b) + 2ac?

Um carro corre 100km por 2 horas. qual é o tempo gasto?

Write two formulas for finding the perimeter of a rectangle

Nadia started at 19.26 feet below sea level and then changed her altitude by climbing a total of 5,437.8 feet up from her initial position. What was Nadia's altitude at the end of her climb

A toy manufacturer needs a piece of plastic in the shape of a right triangle with the longer leg 6 cm more than the shorter leg and the hypotenuse 12 cm more than the shorter leg. How long should the sides of the triangle be?

To celebrate, Clare went out to eat with her 3 friends. Their meal, including tax, was $75. If they left a tip, what is their total bill including the tip.

2x + 2/3 equals 1/3 what is X

Jermain made 6 candles. lukas made 4 times as many candles as jermain did. they plan to pack the candles in boxes with 3 candles in each box. how many boxes will they need for all the candles?