Simplify the decimal expression.0.8 ÷ 0.004
A. 20
B. 2
C. 0.2
D. 200
Answer: D
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Find the indicated vector.Let u = 
, v = 
. Find u - v.
A. 
B. 
C. 
D. 
Solve the problem.A textile company has specific dyeing and drying times for its different cloths. A roll of Cloth A requires 50 minutes of dyeing time and 45 minutes of drying time. A roll of Cloth B requires 60 minutes of dyeing time and 25 minutes of drying time. The production division allocates 2360 minutes of dyeing time and 1660 minutes of drying time for the week. How many rolls of each cloth can be dyed and dried?
A. 11 rolls of Cloth A, 40 rolls of Cloth B B. 18 rolls of Cloth A, 28 rolls of Cloth B C. 28 rolls of Cloth A, 16 rolls of Cloth B D. 21 rolls of Cloth A, 31 rolls of Cloth B
Simplify.(3i)5
A. -243 B. 243 C. -243i D. 243i
Solve the problem.If f(?) = tan ? and f(a) = 3, find the exact value of f(a) + f(a + ?) + f(a + 3?).
A. 9 + 4? B. 9 C. 3 D. undefined