Answer:
$49 and $65 are the choices you should check. These prices are greater than $45.
Step-by-step explanation:
It is given that the store buys items at a wholesale price of $45 each. If the store marks up the price, and no discounts are given, then that would mean that the store sells the store has to sell at a price greater than the buying price which is $45.
Out of the given options, only two options have a selling price which is greater than $45. These are the last and the second last options. Thus the fourth and the fifth options are applicable and hence they are to be checked.
Answer:
3.14
Step-by-step explanation:
after solving
we get ![\frac{125x^{27}}{8y^{39}}](https://tex.z-dn.net/?f=%5Cfrac%7B125x%5E%7B27%7D%7D%7B8y%5E%7B39%7D%7D)
Step-by-step explanation:
We need to simplify the expression:
![\left(\frac{\left2x^{-7}y^7\right}{5x^2y^{-6}}\right)^{-3}](https://tex.z-dn.net/?f=%5Cleft%28%5Cfrac%7B%5Cleft2x%5E%7B-7%7Dy%5E7%5Cright%7D%7B5x%5E2y%5E%7B-6%7D%7D%5Cright%29%5E%7B-3%7D)
Solving
![=\frac{1}{\left(\frac{\left2x^{-7}y^7\right}{5x^2y^{-6}}\right)^{3}}\\\\=\frac{1}{\left(\frac{\left2y^{7+6}\right}{5x^{2+7}}\right)^{3}}\\=\frac{1}{\left(\frac{\left2y^{13}\right}{5x^{9}}\right)^{3}}\\=\frac{1}{\left(\frac{\left2^3y^{13*3}\right}{5^3x^{9*3}}\right)}\\=\frac{1}{\left(\frac{\left8y^{39}\right}{125x^{27}}\right)}\\We\,\,know\,\,\frac{1}{\frac{b}{a}}=\frac{a}{b}\\Applying the rule:\\=\frac{125x^{27}}{8y^{39}}](https://tex.z-dn.net/?f=%3D%5Cfrac%7B1%7D%7B%5Cleft%28%5Cfrac%7B%5Cleft2x%5E%7B-7%7Dy%5E7%5Cright%7D%7B5x%5E2y%5E%7B-6%7D%7D%5Cright%29%5E%7B3%7D%7D%5C%5C%5C%5C%3D%5Cfrac%7B1%7D%7B%5Cleft%28%5Cfrac%7B%5Cleft2y%5E%7B7%2B6%7D%5Cright%7D%7B5x%5E%7B2%2B7%7D%7D%5Cright%29%5E%7B3%7D%7D%5C%5C%3D%5Cfrac%7B1%7D%7B%5Cleft%28%5Cfrac%7B%5Cleft2y%5E%7B13%7D%5Cright%7D%7B5x%5E%7B9%7D%7D%5Cright%29%5E%7B3%7D%7D%5C%5C%3D%5Cfrac%7B1%7D%7B%5Cleft%28%5Cfrac%7B%5Cleft2%5E3y%5E%7B13%2A3%7D%5Cright%7D%7B5%5E3x%5E%7B9%2A3%7D%7D%5Cright%29%7D%5C%5C%3D%5Cfrac%7B1%7D%7B%5Cleft%28%5Cfrac%7B%5Cleft8y%5E%7B39%7D%5Cright%7D%7B125x%5E%7B27%7D%7D%5Cright%29%7D%5C%5CWe%5C%2C%5C%2Cknow%5C%2C%5C%2C%5Cfrac%7B1%7D%7B%5Cfrac%7Bb%7D%7Ba%7D%7D%3D%5Cfrac%7Ba%7D%7Bb%7D%5C%5CApplying%20the%20rule%3A%5C%5C%3D%5Cfrac%7B125x%5E%7B27%7D%7D%7B8y%5E%7B39%7D%7D)
So, after solving
we get ![\frac{125x^{27}}{8y^{39}}](https://tex.z-dn.net/?f=%5Cfrac%7B125x%5E%7B27%7D%7D%7B8y%5E%7B39%7D%7D)
Keywords: Exponents in fractions
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#learnwithBrainly
Answer:
D
Step-by-step explanation:
2 is the answer to this equation