Find the exact value.Given that cos ? = - 
with ? in quadrant II, find cos 2?.
A. - 
B. 
C. - 
D. 
Answer: C
You might also like to view...
Insert parentheses as needed in the expression in order to make it equal to 0. More than one set of parentheses may be needed.15 + 3 ? 2 - 7
A. 15 + 3 ? (2 - 7) B. (15 + 3) ? 2 - 7 C. 15 + (3 ? 2) - 7 D. 15 + 3 ? 2 - 7
Use the discriminant to determine the nature of the roots of the equation.
?
?
Do not solve the equation.
?
A. not real B. real
Name the highlighted angle using the three-letter form of identification.
A. ?HTE or ?ETH B. ?KTE or ?ETK C. ?CTE or ?ETC D. ?T
A candy maker mixes chocolate, milk, and mint extract to produce three kinds of candy (I, II, and III) with the following proportions. If 78 lb of chocolate, 56 gal of milk, and 28 oz of mint extract are available, how much of each kind of candy can be produced? ? I : 7 lb chocolate, 5 gal milk, 1 oz mint extract II : 3 lb chocolate, 2 gal milk, 2 oz mint extract III : 4 lb chocolate, 3 gal milk, 3 oz mint extract ? __________units of candy | can be produced ? __________ units of candy || can be produced ? __________ units of candy ||| can be produced
What will be an ideal response?