For this case we have a quadratic equation of the form:

Where:

We find the roots:

The roots are:

Answer:

Answer: The answer is D
Step-by-step explanation: I just did the question.
Answer: 
Step-by-step explanation:
Given: The total time taken by Evan to mow the 3 lawns = 
Time taken by Evan to mow the first lawn =
Time taken by Evan to mow the second lawn =
Now,Time taken by Evan to mow the third lawn =
⇒Time taken by Evan to mow the third lawn =
⇒Time taken by Evan to mow the third lawn =
Hence, the time taken by Evan to mow the third lawn = 
Answer:
7
Step-by-step explanation:
Answer:
2.7m
Step-by-step explanation:
1.0m
0.5m
+1.2m
2.7m - answer