Find the exact value of the expression using the provided information.Find cos(A - B) given that cos A = - 
, with A in quadrant III, and 
with B in 
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Find all real numbers in the interval [0, 2?) that satisfy the equation. sin x cos x = 
A. 
B. 
C. 
D. 
Mathematics
Simplify the expression.- 
A. 
B. 
C. - 
D. - 
Mathematics
Check to see if the given number is a solution for the equation.6x + 7 = 2x + 19; check x = 3
A. 3 is not a solution. B. 3 is a solution.
Mathematics
Solve the problem. Give the answer to the nearest thousandth if necessary.A long-distance runner runs 4 miles south and then 9 miles east. How far is the runner from the starting point? 
East --9 mi-->
A. 13 mi B. 9.849 mi C. 5.099 mi D. 10.849 mi
Mathematics