Answer:
I believe the answer is 20.
Step-by-step explanation:
Answer:
either G y or J y
Step-by-step explanation:
Answer:
900
Step-by-step explanation:
(n – 2)180 where n is the number of sides
since this is a 7 sided polygon
(7-2) * 180
5 * 180
900
Answer:
The actual mass of the book is between 481 . 5 g and 418 . 5 g.
Step-by-step explanation:
The mass of the book on the scale = 450 g
The percentage error in the scale = 7%
So, the actual mass of the book is 450 g ± 7%
Now, 7 % of the mass 450 g = ![\frac{7}{100} \times 450 = 31.5](https://tex.z-dn.net/?f=%5Cfrac%7B7%7D%7B100%7D%20%20%5Ctimes%20450%20%3D%2031.5)
⇒ 7% of 450 g = 31.5 g
Now, the Actual mass of the book = 450 g ± 31.5 g
450 g + 31.5 g = 481 . 5 g
450 g - 31.5 g = 418 . 5 g
Hence the actual mass of the book is between 481 . 5 g and 418 . 5 g.