Answer:
![\frac{\sqrt[3]{19} }{\sqrt[3]{x} }](https://tex.z-dn.net/?f=%5Cfrac%7B%5Csqrt%5B3%5D%7B19%7D%20%7D%7B%5Csqrt%5B3%5D%7Bx%7D%20%7D)
So A is the answer
Step-by-step explanation:
![y=\frac{19}{x^3}\\\mathrm{Interchange\:the\:variables}\:x\:\mathrm{and}\:y\\x=\frac{19}{y^3}\\\mathrm{Solve}\:x=\frac{19}{y^3}\:\mathrm{for}\:y\\y=\sqrt[3]{\frac{19}{x}}\\\sqrt[3]{\frac{19}{x}}\\\frac{\sqrt[3]{19} }{\sqrt[3]{x} }](https://tex.z-dn.net/?f=y%3D%5Cfrac%7B19%7D%7Bx%5E3%7D%5C%5C%5Cmathrm%7BInterchange%5C%3Athe%5C%3Avariables%7D%5C%3Ax%5C%3A%5Cmathrm%7Band%7D%5C%3Ay%5C%5Cx%3D%5Cfrac%7B19%7D%7By%5E3%7D%5C%5C%5Cmathrm%7BSolve%7D%5C%3Ax%3D%5Cfrac%7B19%7D%7By%5E3%7D%5C%3A%5Cmathrm%7Bfor%7D%5C%3Ay%5C%5Cy%3D%5Csqrt%5B3%5D%7B%5Cfrac%7B19%7D%7Bx%7D%7D%5C%5C%5Csqrt%5B3%5D%7B%5Cfrac%7B19%7D%7Bx%7D%7D%5C%5C%5Cfrac%7B%5Csqrt%5B3%5D%7B19%7D%20%7D%7B%5Csqrt%5B3%5D%7Bx%7D%20%7D)
Answer:
pi4
Step-by-step explanation:
Formula is piD, diamter is 4, so pi4 which equals 12.56
BRAINYLIST
Answer:

Step-by-step explanation:
To find: 
Solution:
Like terms refer to terms with same variables and same powers.
Two like terms can be added or subtracted.
Consider the following expression:

(Here, like terms are added or subtracted)
Answer:
Step-by-step explanation:
cos(34) =sin(56)
cos(77)=sin(13)
sin(25)=cos(65)
sin(61)=cos(29)