ProfS7843
24.11.2019 •
Mathematics
Andrew is trying to create a number puzzle for his younger sister to solve. he challenges his sister to find the mustery number. when 4 is subtracted from half a number the result is 5. the equation to represent the mystery number is 1/2m -4 =. andrews sister tries to guess the mustery number. her first gues is 30. is she correct? why or why not? what is the correct answer?
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Ответ:
1/2m-4=5
+4 +4
1/2m=9 divide 9 by 1/3
m=18
You can check by replacing the m with 18 in the original equation and it will equal to 5.
Ответ:
Answer
The independent variable is the number of people. The initial value (initial fee) for the picnic is $40. As the number of people increases, the total cost of the picnic increases.