B. Discount because when taking a percentage of the price off you are discounting the item
Answer:
D. tan(-π/6)
Step-by-step explanation:
The tangent function is periodic with a period of π, so ...
tan(5π/6) = tan(5π/6 ± kπ) . . . for any integer k
For k = -1, we have ...
tan(5π/6) = tan(5π/6 -π) = tan(-π/6)
I think it’s 25.
if you set up a proportion:
18/30=15/x
cross multiply:
450=18x
solve for x:
x=25