Verify the identity.sin4t = 2 sin2t cos2t
What will be an ideal response?
sin 4t = sin [2(2t)] = 2 sin2t cos2t.
Mathematics
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A garden store sells Kentucky bluegrass seed for $6 per pound and ryegrass seed for $3 per pound. How much rye must be mixed with 100 pounds of bluegrass to obtain a blend that will sell for $5 per pound?
A. 50 lb B. 80 lb C. 40 lb D. 65 lb E. 30 lb
Mathematics
Add. Write your answer in lowest terms.
+ 
A. 
B. 
C. 
D. 
Mathematics
In the exercise below, the initial substitution of x = a yields the form 0/0. Look for ways to simplify the function algebraically, or use a table and/or graph to determine the limit. When necessary, state that the limit does not exist.
A. -3 B. 12 C. 6 D. -6
Mathematics
Combine and simplify. Write the answer as a mixed number as needed.19
- 2
- 1
A. 18
B. 16
C. 16
D. 16
Mathematics