25 add them up Your welcome
1 mile is equal to 5282 foot so,
40 miles is equal to 211,280 foot.
Answer:
108 books = 30 kg mass
1 book = 30 / 108
= O. 278 kg mass
150 books = 150 X 0.278 kg mass
= 41.7 kg mass
Answer:
Option C is correct.
Step-by-step explanation:
We are given the expression:
![(\frac{3^2a^{-2}}{3a^{-1}})^k](https://tex.z-dn.net/?f=%28%5Cfrac%7B3%5E2a%5E%7B-2%7D%7D%7B3a%5E%7B-1%7D%7D%29%5Ek)
The value of a =5 and k = -2
Putting the values and solving
![=(\frac{3^2*5^{-2}}{3*5^{-1}})^-2\\=(\frac{3^{2-1}}{5^{-1+2}})^-2\\=(\frac{3^{1}}{5^{1}})^-2\\\\=(\frac{3}{5})^-2\\if \,\,a^{-1} \,\,then\,\, 1/a\\=\frac{(3)^{-2}}{(5)^{-2}}\\ Can\,\,be\,\,written\,\,as\\\\=\frac{(5)^{2}}{(3)^{2}} \\=\frac{25}{9}](https://tex.z-dn.net/?f=%3D%28%5Cfrac%7B3%5E2%2A5%5E%7B-2%7D%7D%7B3%2A5%5E%7B-1%7D%7D%29%5E-2%5C%5C%3D%28%5Cfrac%7B3%5E%7B2-1%7D%7D%7B5%5E%7B-1%2B2%7D%7D%29%5E-2%5C%5C%3D%28%5Cfrac%7B3%5E%7B1%7D%7D%7B5%5E%7B1%7D%7D%29%5E-2%5C%5C%5C%5C%3D%28%5Cfrac%7B3%7D%7B5%7D%29%5E-2%5C%5Cif%20%5C%2C%5C%2Ca%5E%7B-1%7D%20%5C%2C%5C%2Cthen%5C%2C%5C%2C%201%2Fa%5C%5C%3D%5Cfrac%7B%283%29%5E%7B-2%7D%7D%7B%285%29%5E%7B-2%7D%7D%5C%5C%20Can%5C%2C%5C%2Cbe%5C%2C%5C%2Cwritten%5C%2C%5C%2Cas%5C%5C%5C%5C%3D%5Cfrac%7B%285%29%5E%7B2%7D%7D%7B%283%29%5E%7B2%7D%7D%20%5C%5C%3D%5Cfrac%7B25%7D%7B9%7D)
Option C is correct.