Solve the problem.The half-life of radium is 1690 years. If 150 grams is present now, how long (to the nearest year) till only 100 grams are present?
Fill in the blank(s) with the appropriate word(s).
989 years
Mathematics
You might also like to view...
Represent the first ten terms of the sequence numerically and graphically.an = n + 3
A. 
B. 
C. 
D. 
Mathematics
Graph the equation.y = x2 - 5 
A. 
B. 
C. 
D. 
Mathematics
Translate the sentence into an equation, then solve.A number x decreased by 7.4 is 14.
A. 7.4 - x = 14, x = 21.4 B. 7.4 - x = 14, x = 6.6 C. x - 7.4 = 14, x = 21.4 D. x - 7.4 = 14, x = 6.6
Mathematics
The notation 
is a notation used to represent:
A. a conjunction B. a disjunction C. a conditional D. a biconditional
Mathematics