If 250 mg of a radioactive element decays to 180 mg in 24 hours, find the half-life of the element.

Lindesy wants a new bike that costs $230. Her father says that if she saves up 30% of the cost he will pay the rest. How much money does Lindesy need to save?

340 pages; 20% decrease 340 pages; 20% decrease

A square is reflected across the y - axis, then translated 3 units down to form a second square. Are the two squares congruent, and why?

What is the reciprocal of the number 2/7? A. - 3 1/2 B.-2/7 C. 5/7 D. 3 1/2 i think it is B?

One number is 3 less than twice another. If their sum is 39, find the numbers. Which of the following systems of equations represents the word problem? y = 2x - 3 and y = x + 39 y = 2x - 3 and x + y = 39 y = 2 (x - 3) and x + y = 39

Describe the graph of the function f (x) = x3 - 18x2 + 101x - 180. Include the y-intercept, x-intercepts, and the shape of the graph.

Patty is building a rope ladder for a tree house she needs to 6 ft pieces of rope for the side of the ladder she need seven pieces of rope each 15 inch long for steps how many feet of rope does Patty need to make a ladder

What is 10,386.145 rounded to nearest tenth?

your softball team has 8, 10, 9, and 3 hits during four games. Write and solve an equation to find how many hits the team needs in the fifth game to have a total of 40 hits

Among 450 randomly selected drivers in the 16 minus 18 age bracket, 420 were in a car crash in the last year.