To determine the value of X in the given equation substitute the value of y into the equation and solve for x.
1/5x - 2/3y = 30
1/5x - 2/3(15) = 30
1/5x -10 = 30
1/5x - 10 + 10 = 30 + 10
1/5x = 40
1 = 5x • 40
1 = 200x
X = 1/200.
This is short cut for this type of questions, ie, gain or loss square/100=5^2/100=>0.25%loss
Always this type of questions will have loss
answer:
I think that the right answer is the first, because:
- 6 + 1.5r = - 12
+ 1.5r = -12 + 6
1.5/1.5 = - 6
r = - 6
Answer:
1,215 Superscript one-fifth x
Step-by-step explanation:
Given:
The expression to simplify is given as:
![(\sqrt[5]{1215})^x](https://tex.z-dn.net/?f=%28%5Csqrt%5B5%5D%7B1215%7D%29%5Ex)
We know that,
![\sqrt[n]{a} = a^{\frac{1}{n}}](https://tex.z-dn.net/?f=%5Csqrt%5Bn%5D%7Ba%7D%20%3D%20a%5E%7B%5Cfrac%7B1%7D%7Bn%7D%7D)
Here, 
So, ![\sqrt[5]{1215} = 1215^{\frac{1}{5}}](https://tex.z-dn.net/?f=%5Csqrt%5B5%5D%7B1215%7D%20%3D%201215%5E%7B%5Cfrac%7B1%7D%7B5%7D%7D)
So, the above expression becomes:
![(\sqrt[5]{1215})^x = (1215^{\frac{1}{5}})^x](https://tex.z-dn.net/?f=%28%5Csqrt%5B5%5D%7B1215%7D%29%5Ex%20%3D%20%281215%5E%7B%5Cfrac%7B1%7D%7B5%7D%7D%29%5Ex)
Now, using the law of indices 
Here, 
So, the expression is finally simplified to;
Therefore, the second option is the correct one.
= 1,215 Superscript one-fifth x
1/4 Of 600 Is 150 And 70% Of 300 Is 210. That Means, 70% Of 300 Is Better!
