Answer:
r+1
Step-by-step explanation:
Answer:
B is the answer sorry if it was wrong :)
Step-by-step explanation:
Answer:
= 5a - 1
Step-by-step explanation:
rope 1 = 3a + 6
rope 2 = 2a - 7
total length = 3a + 6 + 2a - 7
= 3a +2a + 6 - 7
= 5a - 1
We conclude that Michael worked for a total of 11.46 hours in the weekend.
<h3>How much time did he work on the weekend?</h3>
We know that during the weekend, the times that he used for each task are:
- (6 + 3/7) hours to do his homework.
- 4.37 hours to clean his room.
- 2/3 hours to walk the dog
The total time is given by the sum between the above numbers, where the difficulty is the fact that the 3 numbers are in different notations (decimal, fraction, and mixed).
The sum is:
S = (6 + 3/7) h + 4.37 h + 2/3 h
The easier way to do this, is to write the 3 numbers in decimal form:
2/3 = 0.66
6 + 3/7 = 6 + 0.43 = 6.43
Then the total time is:
S = 6.43 h + 4.37h + 0.66h = 11.46 h
We conclude that Michael worked for a total of 11.46 hours in the weekend.
If you want to learn more about sums:
brainly.com/question/17695139
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