Answer:
Solution : Option C
Step-by-step explanation:
We have the equations r² = x² + y², x = r cos(θ), and y = r sin(θ) that can be used to solve this problem. In this case we only need the second two equations ( x = r cos(θ), and y = r sin(θ) ) as we don't need to apply the concept of circles etc here.
Given : x = - 9,
( Substitute r cos(θ) for x )
r cos(θ) = - 9,
r = - 9 / cos(θ)
( Remember that sec is the reciprocal of cos(θ). Substitute sec for 1 / cos(θ) )
r = - 9 sec(θ)
Therefore the third option is the correct solution.
It is 160 ! I hope I could help
This is 5 points dude, not 100. (jk I'll help!)
To find tax, you would multiply your total amount by your tax percentage. You didn't provide us with what the tax percentage was, so I'll give you what you should do, which is:
D=710+(710*t)
Where <span>t is your tax percentage and D is your final amount in dollars.
If you can provide us with the tax percentage, I would be happy to help you do that as well.
:)</span>
Answer:12.8
Step-by-step explanation: