The half-life of rubidium 89 is 15 minutes if the initial mass of the isotope is 250 g how many grams will be left after hundred minutes

a class is having a bake sale. The class earns 7 cents for each cookie sold. Draw a graph to model this situation. How many cookies do they need to sell to earn 21 cents?

The ratio of men to women working for a company is 4 to 7. If there are 52 men working for the company, what is the total number of employees?

64 (x + 1) + 3672 = 48

Write an equation for the linr parallel to the given line that contains c. c (3,4); y=-3+1

Evaluate the expression 12 - (8+3)

A population of 1236000 grows 1.3%per year. Find the population after 10 years

The first steps in writing f (x) = 3x^2 - 24x+10 in vertex form what is the function written in vertex form

Simplify the following expression. -7x² - 5x-6x² + 4 + 15x

Is this fraction in the simplest form 23/46

A certain triangle has two 45° angles, what thoe of triangle is it?