Solve the problem.A bacteria colony doubles in 4 hr. How long does it take the colony to triple? Use N = N0 2t/T, where N0 is the initial number of bacteria and T is the time in hours it takes the colony to double. (Round to the nearest hundredth, as necessary.)
A. 12 hr
B. 1.62 hr
C. 6 hr
D. 6.34 hr
Answer: D
Mathematics
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Solve the problem.The sum of the squares of the digits of a positive two-digit number is 13, and the units digit is 1 more than the tens digit. Find the number.
A. 23 B. 34 C. 43 D. 32
Mathematics
Find the quotient. Write the answer in standard form.
A. -10 B. 10i C. -10i D. 10
Mathematics
Simplify.
A. - 
B. 
C. 
D. 
Mathematics
Find 
.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics