If 14 g of a radioactive substance are present initially and 3 years later only 7 g remain, how much of the substance will be present after 8 yr?

Twice the sum of a number and 2 is equal to three times the difference of the number and 3. Find the number

Using Pascal's triangle, determine the first four terms of the expanded expression (x + y) 4.

C) 100x5 Simplify radical

Amanda was 48 inches she grew n inches last year and is now 56 and 1/2 inches write an expression that represents the number of inches Amanda grew

Water makes about 3 4 of a person's weight. If a student weighs 100 lbs., how much of his weigh is water?

On Saturday afternoon, 350 people attended a play. The seating was arranged in 7 equal rows. How many people sat in each row? Draw a bar diagram. Write and solve an equation.

The tour boats at the Laguna can carry 8 passengers. jacob watched 6 floats by. one of the board has 2 empty seats. the other were full. how many passengers were on the 6 boats?

George lives 4 5/10 miles from the gym this amount as a decimal.

Brad and Sally made a total of 31 cakes for the school bake sale. Sally made 7 fewer cakes than Brad. Enter the number of cakes Brad made

Two trains leave the station at the same time, one heading East and the other heading West. The westbound train is going 60mph. The eastbound train is going 80mph. How long will it take the two trains to be 252 miles apart?