Answer:
9% decrease
Step-by-step explanation:
Percentage Decrease = [ (Starting Value - Final Value) / |Starting Value| ] × 100
Answer:
x = 120
Step-by-step explanation:
First you want to get the equation into the form cosx = a
2 cos
=1
Divide both sides by two to get it into the form.
cos
= 
Now, on your calculator, use the inverse of cos, to solve for
.
=
(
)
= 60
Now you want to find x, so multiply both sides by 2.
x = 60 * 2 = 120
x can have many solutions; however, I have only given you one.
Answer:
b is the answer. this is because 17% is equivalent to 0.17 and meaning the information in answer b is exactly correct