The half-life of a certain element is 100 days. How many half-lives will it be before only one-eighth of this element remains?

2

3

8

12.5

To which set of numbers does the number belong? - 40 a. integers b. natural numbers c. whole numbers d. irrational numbers

The length of a rectangle is three centimeters less than the width. If the area of the rectangle is 54cm2, find the dimensions of the rectangle.

determine if each pair of ratios or rates are equivalent and explain your reasoning. Four hours worked for $12.07 hours with for $28 no because ... ?

Is 5 g greater than 508 mg

A family wants to use a simulation to find out the probability of having at least one boy in their first three children. The digit assignment is even for a girl and odd for a boy. The random digits are given as: 2731472867829684178912.

A number is at most - 7

The difference of two numbers is 3. Their sum is 11. What are the numbers?

Paula's dog, Toby, weighs 85 pounds. 1 pound (is about) 0.454 kilograms To find Toby's weight in kilo, what conversion factor should you use?

The larger of two numbers is five more than twice the smaller number. The sum of the two numbers is 38. Find the numbers.

A diagonal shortcut across an empty rectangular lot is 97 feet. the lot is 72 feet long, what is the other dimension of the lot