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

If S = {x, y, 4,9,?), which could describe U? A; U = { keys on a keyboard} B; U = { letters } C; U = { numbers } D; U = { punctuation marks }

25 yd 10 yd 20 yd 15 yd

What is the area of a house with 3 rooms and each room is 4 by 9

Simplify (x^-1 - (x+1) ^-1) ^-2

Add by changing the fractions to equivalents fractions. 2 2/3 + 2/3

The ratio of the number of white sections to the number of orange sections is 2 to 4. What is the value of the ratio of the number of white pieces to the number of orange pieces? 2 1/2 1/3 4

Determine whether R (-2.46, - 0.16), O (0.64, 3.98), and Q (1.48, 0.94) are the coordinates of the vertices of a triangle

Select other ways to write 700,562

Justin weighs 15 pounds less than Greg weighs. Half of Greg's weight is 75 pounds less than Justin's weight. How much does each of them weigh?

Between which two consecutive integers does √47 lie? A. 5 and 6 B. 6 and 7 C. 7 and 8 D. 8 and 9