clairee002
11.11.2020 •
Mathematics
Which answer choice correctly identifies the extraneous information in the problem?Samuel is 10 years old. He mowed the neighbors lawn on Saturday and earned $40. It took him 4 hours to mow the lawn and 2 hours to clean his room. How much money did Samuel earn an hour?A. The extraneous information is Samuel earned $40 and it took him 4 hours to mow the lawn.B. The extraneous information is Samuel took 4 hours to mow the lawn and 2 hours to clean his room.C. The extraneous information is Samuel is 10 years old and earned $40.D. The extraneous information is Samuel is 10 years old.
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Ответ:
The extraneous information is Samuel is 10 years old.
Step-by-step explanation:
You don't need Samuel's age to solve the problem you only need the amount and the hours to answer the question. So, the answer would be D, The extraneous information is Samuel os 10 years old.
Ответ:
no solutions.
Step-by-step explanation:
get y by itself on one equation.
-4x + y = 3 ... add 4x to each side.
y = 4x + 3
plug in 4x + 3 for y in the other equation.
8x - 2y = 1
8x - 2(4x+ 3) = 1 ... plug in the y value
8x - 8x + 3 = 1 ... distribute the 2
3 = 1 ... solve
3 does not equal 1 so it is no solutions.