You have to get from $30 to $21.75
21.75/30=0.725 x 100= 72.5% of the original price
I think B. Would be the answer
Answer:
1-k^2
Step-by-step explanation:
tan A= sin A/cos A
(sin A)(cos A)(sin A/cos A)=(sin A)^2
(sin A) ^2 + (cos A) ^2= 1
(sin A) ^2=1-(cos A) ^2
(sin A)^2= 1 - k^2
Answer:
r
(
x
2
+
5
)
=
√
x
2
+
8
Step-by-step explanation:
y = -19
I started by adding 18 to both sides(inverse operation) then dividing by -2 to isolate the variable. What you do to one side must be done to the other