Use the law of cosines to find a true statement from the list below, if 
.
?
A. 
B. ?
C. ?
D. ?
E. ?
Answer: E
Mathematics
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Determine the number of significant digits in the given approximate number.0.0403
A. 1 B. 2 C. 3 D. 4
Mathematics
Find the numerical value of the expression for 
and 
A. a) 
b) 
B. a) 
b) 
C. a) 5 b) 
D. a) 
b) 5
Mathematics
Find the slope of the line tangent to the curve at the given point.y = 11 sin x; x = 
A. -11
B. 11
C. 0
D. 
Mathematics
Solve the problem.In a chemistry class, 6 liters of a 4%-saline solution must be mixed with a 10% solution to get a 6% solution. How many liters of the 10% solution are needed?
A. 2.0 L B. 3.0 L C. 4.0 L D. 6.0 L
Mathematics