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.
The Midpoint Formula is a strategy to find the midpoint. If you need to find the point that is exactly halfway between two given points, just average the x-values and the y-values.
Answer:
Shouldn't you just
Step-by-step explanation:
subtract $30 from $24
Since the discount is 15%, that means that they will pay 85% of the original price ( 100% - 15% = 85%).
Multiply the original price by 85% to find the discounted price:
98.00 x 0.85 = 83.30
They will pay $83.30 for the saw.