A = 43 • 3x + 1
= 44 •3x
= 132x
Solution: We are given:


Now let's find the estimated value of standard deviation using the range rule of thumb. According to range rule of thumb, the estimate of standard deviation is:

Therefore the estimated standard deviation is 0.690
is this an acceptable approximation?
Answer: c. Yes, because the error of the range rule of thumb's approximation is less than 15%.
Explanation:
The difference between estimated standard deviation and actual standard deviation is:
0.807 - 0.690 = 0.117
Now let's find the percentage of error
.
Therefore, the error of the range rule of thumb's approximation is less than 15%.
4.05-2.74=1.31
The difference is 1.31 pounds.
5x + 18 + 81 + 4x = 180
Like terms
9x + 99 = 180
9x = 81
X = 9
Hope this helps!
Brainliest is much appreciated
12 and 1/8 because you change 5 1/4 into 5 and 2/8. Then you add them togther and get 12 1/8