Strontium-90 has a half-life of about 29 years. After 65 years, about how many grams of a 25-gram sample will remain?

5 There is a bag filled with 3 blue and 4 red marbles. A marble is taken at random from the bag, the colour is noted and then it is not replaced. Another marble is taken at random. What is the probability of getting 2 blues?

In each bouquet of flowers there are 4 roses and 6 carnations. find how many roseses and carnations there are in four bouquets

Is a greater than, less than, or equal to 35°?

Which best describes the triangle or triangles, if any, that can be formed with the sides measuring 60 centimeters, 100 centimeters and 40 centimeter A. No triangle B. One unique scalene triangle C. infinitely small similar scalene triangles D.

What're all the numbers divisible by 3 and 9?

Complete this sentence in a triangle the angle with the greatest measure is always opposite the

Given cosθ=1/3, find sin (90-θ)

What is 17 over 31 in simplest form

Write and solve a real-world word problem in which there are 3 pancakes for every person

Solve the following problems 2 foot 5 in + 9 in