Answer:

Step-by-step explanation:
y = csc x
y' = -cot x csc x

![y' = \dfrac{d}{dx} [\csc \sqrt{x}]](https://tex.z-dn.net/?f=%20y%27%20%3D%20%5Cdfrac%7Bd%7D%7Bdx%7D%20%5B%5Ccsc%20%5Csqrt%7Bx%7D%5D%20)




So you would add 12 to the other side of the equation, and 9+12=21, so x=21.
Answer: 5 is the radius because it is half of 10 in the circle
Step-by-step explanation:
The line equation is Y= - 1/2x +4
Answer:
SAS
Step-by-step explanation:
Y is congruent to X and T is congruent to S, the two triangles kiss each other.