Iodine-125 has a half-life of about 60 days.

How many milligrams of a 500 mg sample will remain after 300 days?

1. 0.6 mg

2. 7.8125 mg

3. 15.625 mg

4. 31.25 mg

The sum of two numbers is - 17. Their difference is 41. Find the numbers.

36 is 12% of what number

Write y=1/6+4 in standard form using integers.

Two airplanes leave chicago's midway airport at the same time, traveling in opposite directions. one travels at 25 miles per hour faster than the other. after 2 hours they are 490 miles apart. find the speed of each airplane.

The table shows the height of a plant overtime. Which type of function best models the data? Write an equation to model the data. Year | height (in, cm) 0 | 76 1 | 83 2 | 90 3 | 97 4 | 104 A. Quadratic; Y = 7x^2 + 76 B. Linear; y = 7x + 76 C.

How do you solve 4y-8x=12

Joe spends $8 on lunch and 6.50 on dry cleaning. He also buys 2 shirts that cost the same amount. Joe spends a total of $52. What is the cost of each shirt?

F=-GMn/D^2 The answer is M = what

Find 4x - y - 2z if x = - 2, y = 3, and z = - 2

What is the value of x in the proportion (x-1) / 5 = (4x+2) / 35