A scientist begins with 100 mg of a radioactive substance. After 6 days, it has decayed to 60 mg. How long after the process began will it take to decay to 10 mg?

Find the solution of this system of equations. Separate the x - and y-values with a comma. x - 2y = - 29 and x - y = - 11

How many solutions do each of these systems have? 1. Y=3/4x-5 -3x+4y=-20 2. X+4y=6 Y=2x-3 3. 6x+3y=-12 Y=-2x+4 1-3 either have A. One solution B. two solutions C. an infinite number D. No solution

What is the estimate of how much gas is used on a 250-mile car trip if the equation for the line of the best fit is y = 0.03x + 0.25

How do I combine like terms for 5y-8-y

cookie recipe calls for 1/4 teaspoon of vanilla extract she has 9/12 of a teaspoon in her kitchen how many batches of cookies can she make

Express answer in exact form. Show all work for full credit. Find the area of one segment formed by a square with sides of 6" inscribed in a circle. (Hint: use the ratio of 1:1: squared 2 to find the radius of the circle.)

Alice and Shane went to the pet store and bought 13 bags of dog food all together. Alice bought 9 bags of those bags of dog food. How many bags of dog food did Shane buy?

Which is more, 1 ton or 1,438 pounds?

If a company plans to sell 48,000 units of product but sells 60,000, the most appropriate comparison of the cost data associated with the sales will be by a budget based on? Select one: a. the original planned level of activity. b.

Factor the expression 5x^2-18x+9