Evaluate the logarithm.log9
A. -9
B. 2
C. -2
D. 9
Answer: C
Mathematics
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Solve.A stone mason bought 11.5 tons of rock for a total cost of $1610. What was his cost per ton?
Fill in the blank(s) with the appropriate word(s).
Mathematics
Use an appropriate identity to find the exact value of the expression.cos 
A. - 
B. - 
(
- 1)
C. 
D. - 
(
+ 1)
Mathematics
Solve the problem.It is necessary to have a 40% antifreeze solution in the radiator of a certain car. The radiator now has 30 liters of 20% solution. How many liters of this should be drained and replaced with 100% antifreeze to get the desired strength?
A. 10.0 L B. 15 L C. 12 L D. 7.5 L
Mathematics
Represent the complex number below graphically.
2
A. ?
B. 
C. ?
D. ?
E. ?
Mathematics