Question

medal if helped
Akira estimated that a tree was 40 years old. The true age of the tree was 47 years old.



Which expression can be used to calculate the percent error in Akira’s estimate?

A. 47-40/40 . 100%

B. 40-47/47 . 100%

C. http://static.k12.com/bank_packages/files/media/mathml_9445faca464a2132c7ed5383b676c0d1841f30b0_1.gif


D.http://static.k12.com/bank_packages/files/media/mathml_1ce7d1de6319b8b9e55af1e3eafe4380b25c5f0d_1.gif

Answer 1

To find percent error, you take the estimated number and divide it by the exact number, and that will leave you with a decimal.
40/47=0.85
Then, you move the decimal point to the right two places to find your percentage.
0.85 = 85%
The expression to find percent error is
estimated value/exact value=%error

Answer 2

witch gives you D

Answer 3

I am stuck

Answer 4

@Naturesweetie help me