Answer
Find out the percent error in Annie's estimate .
To prove
Formula
![Percentage\ error = \frac{error\times 100}{exact\ value}](https://tex.z-dn.net/?f=Percentage%5C%20error%20%3D%20%5Cfrac%7Berror%5Ctimes%20100%7D%7Bexact%5C%20value%7D)
As error = approx value - exact value
As given
Annie estimates that the height of a bookcase is 78.25 in.
The actual height is 75.50 in.
approx value = 78.25 in.
actual value = 75.50 in.
error = 78 .25 - 75 .50
= 2.75
put in the formula
![Percentage\ error = \frac{2.75\times 100}{75.50}](https://tex.z-dn.net/?f=Percentage%5C%20error%20%3D%20%5Cfrac%7B2.75%5Ctimes%20100%7D%7B75.50%7D)
![Percentage\ error = \frac{27500}{7550}](https://tex.z-dn.net/?f=Percentage%5C%20error%20%3D%20%5Cfrac%7B27500%7D%7B7550%7D)
Percentage error = 3.64 % (approx)
Therefore the Percentage error be 3.64 % (approx).
Answer:
100 degrees and 70 degrees
Step-by-step explanation:
180 - 10 = 170
with a ratio of 7:10
7x + 10x = 170
17x = 170
x = 170/17
x = 10
one angle in 100 degrees and the other is 70 degrees
Answer:
it will be C because if u multiplie -6 by 4 it will equle -24 meaning that n=-6
Answer:
As she ate 1/10 of cake, we need to know how many cake remains after it, so we can substract:
1 - 1/10 = 10/10 - 1/10 = 9/10
Then, we need to divide the 9/10 into 3 portions:
(9/10) / 3 = 9/30 = 3/10
So we know the fractions would be 3/10 each on this situation..