Let's assume
rent of the one chair = x
rent of the one table = y
3x + 2y = 24
8x + 4y = 53
multiply the first equation by 2
6x + 4y = 48
8x + 4y = 53
if we subtract from last equation to previous equation,
2x = 5
x = 2.5
y = 8.25
Therefore the cost of one chair is 2.5 dollars
the cost of one table is 8.25 dollars
Given:
The expression is

To find:
The value of given expression.
Solution:
We have,

![[\because \cos^{-1}(-\theta)=\pi -\cos^{-1}\theta]](https://tex.z-dn.net/?f=%5B%5Cbecause%20%5Ccos%5E%7B-1%7D%28-%5Ctheta%29%3D%5Cpi%20-%5Ccos%5E%7B-1%7D%5Ctheta%5D)
![[\because \cos \dfrac{\pi}{3}=\dfrac{1}{2}]](https://tex.z-dn.net/?f=%5B%5Cbecause%20%5Ccos%20%5Cdfrac%7B%5Cpi%7D%7B3%7D%3D%5Cdfrac%7B1%7D%7B2%7D%5D)

![[\because \tan(\pi-\theta)=-\tan \theta]](https://tex.z-dn.net/?f=%5B%5Cbecause%20%5Ctan%28%5Cpi-%5Ctheta%29%3D-%5Ctan%20%5Ctheta%5D)
![[\because \tan \dfrac{\pi}{3}=\sqrt{3}]](https://tex.z-dn.net/?f=%5B%5Cbecause%20%5Ctan%20%5Cdfrac%7B%5Cpi%7D%7B3%7D%3D%5Csqrt%7B3%7D%5D)
Therefore, the value of given expression is
.
Ah... good ol' square roots...
Whenever you take the square root of multiplication or division, you can do the square roots separately. So, we can write:

This nifty truth allows us to easily find the answer:

All done!
Answer:
(-2, 6)
Step-by-step explanation:
you can use the substitution method:
(4, 7) Is 7 > 8 - 1? No, 7 is not greater than 7
(1, -4) Is -4 > 2 - 1? No, -4 is not greater than -1
(-2, 6) Is 6 > -4 - 1? Yes, 6 is greater than -5
(0, -8) Is -8 > -1? No
Answer:
What? I don't understand your question.
Step-by-step explanation: