Error analysis:

To find the distance between points (2, - 5) and (4, 10) the following steps were used.
Is the distance correct? If the distance is not correct, where was the FIRST mistake made?
Step 1: d =√ (4-2)^2 - (10 + 5)^2
Step 2: d = √ (2)^2 - (15)^2
Step 3: d = √ 4 - 225
Step 4: d = √ -221
Step 5: d = -14.9

A. The distance formula has addition in between the parenthesis, so step 1 should be d = √(4-2)^2 + (10 + 5)^2
B. There are no mistakes. The distance of -14.9 is correct.
C. Step 1 should have (10 - 5)^ 2 as the second parenthesis.
D. In step 2, (15)^2 means multiply 15 times 2 to get 30 instead of 225 for step 3.

1 answer

The correct answer is D. In step 2, (15)^2 means multiply 15 times 2 to get 30 instead of 225 for step 3.
Similar Questions
    1. answers icon 1 answer
  1. Error analysis:To find the distance between points (-6, -8) and (5, -12), the following steps were used. Is the distance
    1. answers icon 1 answer
  2. rror analysis:To find the distance between points (2, -5) and (4, 10), the following steps were used. Is the distance correct?
    1. answers icon 3 answers
  3. Error Analysis:Find the error in the problem simplified below: 3√5(6√2 + 4√5) 18√10 + 12√25 18√10 + 12√5 Responses
    1. answers icon 1 answer
more similar questions