you find a rock containing a mixture of element and lead. you determine that 20% of the orignial element remain; the other 80% decayed into leads. how old is the rock?

Enter the value of t that makes this equation true. t + 83.55 = 107.04 t = [___]

Find the 8th term in the following geometric sequence. 28,14,7,3.5, ...

James drove 12,219 miles one year and 11,023 miles the second year. About how many miles did James drive altogether? (Give your answer to the nearest 1,000 miles.)

How do you write a decimal as a percent

90% * x = 50 pounds of money

51+46 b) Use the formula v = u + at to find the velocity, when • the initial velocity is 3 m/s • the acceleration is 1.5 m/s2 • the time is 7 seconds

10 children in kindergarten class any dog 14 children in the class do not own a dog find the ratio of the number of children that on a dog to the number of children in the class express the ratio in a simplify fraction

A bunch of 6 bananas cost $3.54. What is the unit rate?

Christopher buys a basket of eggplants for $6 before tax. the sales tax is 3%. what is the total price Christopher pays for the basket of eggplants?

12mn square - 18m square n square