Element U has a half life of T billion years. Find the half life of this element if 1/6 of the original amount is left after 11.55478 billion years.

Which operation should be performed first for calculations involving more than one arithmetic operations

Assume a and b are both integers and a > 0. Define a remainder after the division of b by a to be a value r such that r ⥠0, r < a, and there exists an integer q for which b = aq + r. a) Prove uniqueness.

Solve the system of equations using substitution: 7y+2x=16 5y-9=x

A single 6-sided die is rolled. What is the probability of rolling a number that is not 4?

Which of the following statements is true? All the answers are correct. If a function has an inverse function, then the original function will pass the horizontal line test. A function will always pass the vertical line test.

a school bus has 22 rows of seats, and 4 students can be seated in each row / students riding in the bus have filled 19 rows of seats and 1/2 of the remaining seats. how many seats on the bus are empty?

If model shows the width of a tile is 1/6 in. And the actual tile has a width of 2/9 ft. What is the ratio of a tile in the model to the area of an actual tile?

3 (x-0.2) = 1.8+x find x

A word or phrase used in informal conversation is called

Frank and James take 4 hours to paint a room. If frank painted alone it would take him 9 hours. How long would it take James to paint the room alone?