Solve the problem.A certain radioactive isotope decays at a rate of 0.25% annually. Determine the half-life of this isotope, to the nearest year.
A. 3 yr
B. 120 yr
C. 277 yr
D. 200 yr
Answer: C
Mathematics
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Find the LCM for the following numbers: 18 and 24
a. 6 b. 3 c. 72 d. 18
Mathematics
Answer the question. You will need to use the formula 4.9t2 + vot = s.Approximately how far will an object fall in 5 seconds, if it is thrown downward at an initial velocity of 10 meters per second from a helicopter?
A. 175.8 meters B. 167.6 meters C. 178.2 meters D. 172.5 meters
Mathematics
Perform the indicated conversion within metric units of length.651 millimeters to centimeters
A. 65,100 cm B. 65.1 cm C. 6510 cm D. 6.5 cm
Mathematics
Complete the factoring.-72z7 = -9z2( )
A. 8z5 B. -8z5 C. 8z2 D. 648z
Mathematics