Add or subtract. Express the answer as a mixed number.7
+ 12
A. 18
B. 7
C. 20
D. 19
Answer: D
Mathematics
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Determine all solutions of the equation in radians.Find cos 
, given that cos ? = - 
and ? terminates in 90° < ? < 180°.
A. 
B. - 
C. - 
D. 
Mathematics
Translate to a proportion.94 is 99% of what?
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Mathematics
Find the GCD or LCM as indicated.Given 48, 162, and 9, find the LCM.
A. 324 B. 1296 C. 432 D. 648
Mathematics
Solve the problem. Round to two decimal places unless otherwise indicated.Suppose the cost per ton, y, to build an oil platform of x thousand tons is approximated by y = 
. What is the cost per ton for x = 20?
A. $3125.00 B. $3000.00 C. $431.03 D. $25.00
Mathematics